The US Defence Department earlier this week said the Long March 5B rocket core "cannot be pinpointed until within hours of its re-entry".Īn astronomer at the Paris-PSL Observatory, Florent Delefie said: "Given the size of the object, there will necessarily be big pieces left over." But added, "the chances of debris landing on an inhabited zone are tiny, probably one in a million." leaving only a very small portion that may fall to the ground, which will potentially land on areas away from human activities or in the ocean," Wang Yanan, chief editor of Aerospace Knowledge magazine, was quoted as saying by the newspaper. "Most of the debris will burn up during re-entry. The situation is "not worth panicking about," it said, citing industry insiders. McDowell, a member of the Harvard-Smithsonian Centre for Astrophysics, said the rocket's main stage core would likely break into a shower of debris equivalent to that of a small plane crash and come down in a narrow trail stretching about 160km.īased on its current orbit, the debris trail is likely to fall somewhere as far north as New York, Madrid or Beijing and as far south as southern Chile and Wellington, New Zealand, or anywhere in between, McDowell said earlier this week.Ĭhina newspaper the Global Times, published by the Chinese Communist Party, said the stage's "thin-skinned" aluminum-alloy exterior will easily burn up in the atmosphere, posing an extremely remote risk to people. Follow this page for updates: /rsE6yzcnHb- The Aerospace Corporation May 7, 2021Harvard-based astrophysicist Jonathan McDowell said potentially dangerous debris will likely escape incineration but in all likelihood would fall into the sea, given that 70 per cent of the world is covered by ocean. Our latest prediction for #LongMarch5B CZ-5B rocket body reentry is □ 04:19 UTC ± 8 hours along the ground track shown here. Usually first-stage rockets re-enter soon after lift-off, normally over water, and don't go into orbit like this one did.Īn astrophysicist earlier this week revealed New Zealand is one of a number of worldwide locations in the path of the rocket's trajectory - though it is more likely the debris will fall in the ocean. In a tweet sent on Friday evening in the US, the Aerospace Corporation said the latest prediction for the re-entry of the 18-tonne Long March 5B rocket body by its Centre for Orbital Reentry and Debris Studies (CORDS) was for eight hours either side of 0419 GMT on Sunday (8am-midnight Sunday NZ time).ĬORDS' latest "informed prediction" showed near the North Island as a likely location - but it noted that re-entry was possible anywhere along paths covering large parts of the globe. Experts added that pinpointing the re-entry location was extremely difficult and debris is likely to land in the ocean. Photo: via The Aerospace CorporationCalculations into where a section of an out-of-control rocket will land this weekend have been updated - and New Zealand's North Island is the latest "informed prediction".īut don't panic - China's foreign ministry said most debris from the rocket will be burned up on re-entry and is highly unlikely to cause any harm. North Island named as 'informed prediction' for where Chinese rocket debris will land.
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“She’s been off I think for three weeks with full pay. “We take an interest in everyone that works here,” said Supervisor Valle. When Amaya told him about her symptoms on May 6, he called for medics with the Hayward Fire Department to administer a test at her home. She was tested so quickly thanks to the help of Alameda County Supervisor Richard Valle, the founder of the recycling center where she works, Tri-CED Community Recycling. She was tested for Covid-19, and the next day learned she was positive. Just a few hours after receiving the news about her mother, Amaya began feeling shortness of breath. “You’re not only having coronavirus, but also being a teen mom, being in high school working full-time and never complaining,” she added, noting the recent stress Amaya has been under. “She’s the first in her family to read and write,” said Davida Scott, Amaya’s mentor and a teacher at Hayward Adult School. Her sister and daughter have grown up together, with Amaya’s mother caring for them while Amaya attended school and worked. Since her sister was born, Amaya has taken her to countless doctor appointments for severe dermatitis, sometimes missing class. With her mother in the hospital and classes still being held online, Amaya now had to care for both her three-year-old daughter, Alicia Amaya, and her four-year-old sister, Kimberley Amaya. Two hours later, the hospital called to tell her that her mother, Maria Juana Amaya, was going on a ventilator. Amaya was home by midnight, tearful and afraid, not knowing what would come next. Rose Hospital emergency room in Hayward, just south of Oakland. That night, she rushed her mother and stepfather, who was also sick, to the St. But on May 5, Amaya knew her mother had to go to the hospital once her breathing became labored. She insisted on staying home because she didn’t want to leave her children. Her mother started feeling the now-familiar symptoms in late April. “I honestly thought…that I wasn’t going to graduate,” said Amaya, 19. Then her family came down with Covid-19, the disease caused by the coronavirus. Her goal was getting to Friday’s graduation and become the first person in her family to graduate high school. Maintaining her drive and schedule was already a challenge on any given day, even prompting her to temporarily leave continuation school earlier this school year. Her days off were for completing homework assignment and spending time with her daughter. On most days, she would attend school in the mornings, arrive by noon for her receptionist job at a local non-profit recycling center, then work her manager shift at Popeyes until 11 p.m. Photo: Supervisor Richard Valleĭo you count on EdSource? If so, please make your donation today.įor months before the coronavirus pandemic hit, Maria Amaya was working two jobs while raising her daughter and finishing high school at a continuation school in the San Francisco Bay Area. Maria Amaya, 19, is graduating amidst the pandemic, after battling Covid-19 herself. Microsoft is holding a special Windows event on June 24, where the company is expected to reveal the next version of Windows. The company?s CEO recently said that he has been using the new version of Windows since some time during the Build 2021 conference last month. Now, Microsoft has been dropping hints about Windows 11. The Xbox Game Bar and Windows Game Mode all remain the same as Windows 10, at least in the early version that was leaked last night. The new Xbox app is integrated into Windows 11, offering quick access to Xbox Game Pass games, the social parts of Xbox network, and the Xbox Store. Microsoft is also bringing an improved Xbox experience to Windows 11. There is also a new startup sound ? something that has proved to be iconic with each version of Windows. The setup procedure is very similar to Windows 10X, where it walks users through a set of steps to configure Windows. Microsoft has also included a new setup experience in Windows 11. Microsoft is reportedly working on a new app store to allow developers of Windows to submit any app ? including browsers like Google Chrome and Mozilla Firefox. Microsoft CEO Satya Nadella, during the company Build 2021 conference, said that the new Windows Store will ?unlock greater economic opportunity for developers and creators.? Now this is rather surprising as Microsoft has itself said that it is working on a new Windows Store and rumours suggest that it will be a big change from the Windows Store we have today. The Windows Store, according to the leaked UI, doesn?t seem to get any significant changes and looks largely like the Windows 10 Store that Windows users have right now. This will allow users to quickly snap windows side-by-side, or arrange them in sections on your desktop. Windows 11 will also include new snap controls that users can access from the maximise button on all apps. The report says that a large part of the operating system feels finished, so a beta can be expected to arrive shortly for Windows Insiders to test out. Since this is an early version of Windows 11, the widgets don?t seem to have been finished, but they slide out and provide a quick look at news, weather, and other web content.Īccording to a report in The Verge, Windows 11 will bring more changes to the built-in apps within Windows. There is also a new icon in the Windows 11 taskbar, labelled ?Widgets.? Now, this could be the Windows Widegets that were earlier rumoured to be brought back to Windows. Further, Windows 11 will also have a dark mode. The Start Menu also includes pinned apps, recent files, and the ability to quickly shut down or restart Windows 11 devices. The updated Start Menu looks to be a more simplified version of the one in Winwos 10 without the Live Tiles. If users don?t want their app icons and start menu in the center of the task bar, there is an option to move all of them to the left-hand side. There is also a new Start Button and Menu. Before we begin, it is important to note that this is not a final version of Windows and may not include everything that is coming with the next-generation Windows OS.įrom what we can see, the most prominent change seems to be in the taskbar, where Microsoft seems to have centered the app icons and cleaned up the taskbar by letting go of the search bar and changed it with a single search button. The Verge accessed the leaked Windows 11 and gave us a step-by-step lowdown of what this early version of Windows 11 promises. A video from The Verge?s Tom Warren on his Twitter shows that the new Windows 11 user interface and Start Menu look very similar to what we have already seen in Windows 10X, which was cancelled in favour of Windows 11. After screenshots were first published on Chinese website Baidu, the entire Windows 11 OS has been leaked online with a new user interface, start menu, and many more changes. Just a few days after Microsoft updated its support document to reflect the change, the next generation of Windows, Windows 11 has leaked online. Microsoft recently announced that it will end support for Windows 10 in 2025. If using a round keyring, you may need to cut or punch out a small semicircle of leather in the middle of each side to allow the keyring to sit correctly. If you have a chunky car key, you may want to add a "D" ring or standard round key ring to attach it to your new keyfob. Burnishers can be obtained cheaply from ebay, also look out for ones that attach to a dremel or drill. It works will but if you don't have Gum Trag, just use water and if you don't have a burnisher then use a round piece of wood or something hard and smooth. To dress the edges, I used Gum Tragacanth and burnished with a leather burnisher. I beveled the edges prior to burnishing which is slightly different than shown in the video, for the keyering in the video, I forgot to bevel the edges and I do think the beveled edges gives a much nicer end result. If you don't have a punch, you could drill the holes but take case as the drill could tear the fibers. I punched my holes about 1/4 in (6mm) from the ends. The tracker is probably my favourite addition to this product. Use a punch size to match the post that you have. The Ekster Key Holder seeks to be a simple and elegant solution for your keys. Washers to act as spacers between keys.Gum Tragacanth - To aid burnishing the edges. Dye / Leather finishes of your choice, across the 3 keyrings pictureed I used :.Optional blank keying or "D" ring - chunky car keys wouldn't be practical inside ( see photo).1 Chicago Screw ( binding post) 3/4 to 1 inch tall (15 - 25mm) Aim for one where the post is 3mm wide or less so your keys go on OK.I purchased mine as an off cut from eBay, the piece I have was just a few pounds / dollars and was enough for a few key rings. Firm leather works best but softer leather will be fine, it will just have a different aesthetic. 6-7oz leather (about 3mm) thick (ish) 1 inch x 8 inches ( 25x200 mm) I used natural veg tan but you can use pre-dyed ( or even an old belt).FREE delivery Fri, Nov 24 on 35 of items shipped by Amazon. I made these key rings from a small leather off-cut I bought from eBay for a couple of pounds / dollars. Mini Key Organizer Keychain Holder - Compact Key Holder for Keychain Key Case, Key Smart Key Holder, Attach Key Fob. This has the advantage that you don't have keys jangling about in your pocket. Outside of that you need to potentially look at other options.A swivel key ring has the keys piviot on a post at one end in much in the same way as a Swiss Army Knife. I think this product works really well when you can limit yourself to a certain amount of keys. Made from stainless steel and premium leather to prevent scratches on your phone in. At least the ones that you are most connected to. An easy-access key holder that organizes 2-8 keys in a silent stack. When it's hard to get your wallet out or your keys out even though a lot of the new vehicles are good for keys that are dongles just like a lot of what we're used to now, it's really nice to actually reach into your pocket pull out your wallet and not worry about getting caught up on your keys and not only having to worry about the fact that all your keys are in one place. I think this is a game changer for future men working to try to isolate your pocket catastrophe that is something we literally deal with everyday. I added a extra key that was part of the car and another key that I needed on the d-ring and honestly I haven't had any problems in the pocket. We don't think about it from day to day, but it adds up. It's a lot of weight, it's a lot of hassle. I think we really keep a lot of keys on our normal key rings and don't think about them. Once I really looked at my keys and thought wow do I really need these, I was like well yeah this makes sense. When I actually got it I was a little off put by the fact that there was not a lot of room for the keys that I thought I could put on there. Add to Favorites Felt Valet Tray, Felt Catchall Dish, Nordic Home Decor, Key Tray Felt, 7th Anniversary Wool Gift, Vegan Vegie Desk Caddy 15.99. I was a little skeptical when it came to having a key carrier AKA key case. 6 Key Holder Compact Stylish Three-Fold Leather Keychain Wallet Easy Key Organization GIFT (327) 31.25. The sophisticated KeySmart Leather Compact Key Holder is a minimalist key holder that tames the unruly jumble. The plaintiffs appealed to the United States Court of Appeals for the Third Circuit, and on June 3, 1999, the Civil Rights Division filed an amicus brief arguing that the judge should have allowed the jury to decide whether to award punitive damages. The judge then refused to let the jury consider whether to grant punitive damages. However, the jury declined to award the couple any compensatory damages, even a nominal amount. The Division's brief argues that the Townships' commencement of eminent domain proceedings in this case constitutes the implementation of a land use regulation covered by RLUIPA.Ī federal court jury in Pittsburgh, Pennsylvania found that the defendants had discriminated against an African American couple by lying about the availability of a rental unit. The Township argued on summary judgment that eminent domain proceedings are not covered by RLUIPA. The Township commenced eminent domain proceedings against the Albanian Association Fund's land while its application for a conditional use permit to construct a mosque on that land was pending before the Township's Planning Board. N.J.), a Religious Land Use and Institutionalized Persons Act of 2000 (RLUIPA) case brought by plaintiffs who are seeking to construct a mosque in the Township. On July 20, 2007, the court granted the United States' motion for leave to file an amicus brief in Albanian Associated Fund, Inc. The court agreed, finding that the failure to provide “unimpeded access” to the front door to persons who use wheelchairs, including not just those who live in the unit but also a “neighbor, friend, or family member, a political candidate, or a repairman,” is “in effect, to send them away as if unwelcome,” and “precisely the discrimination the FHAA forbids.”Īlbanian Associated Fund, Inc. The United States filed a Statement of Interest arguing that, under the Act, the front doors and walkways are “public use and common use portions” of covered dwellings and therefore required to be accessible, regardless whether there is another accessible route into the unit. Defendants argued that their only obligation was to provide an accessible route into the unit, which, they alleged, they had done by providing an accessible route through the garage. At issue was whether, under the Fair Housing Act’s accessibility requirements for newly-constructed multifamily dwellings, the front door and walkway leading to a covered unit are required to be accessible to persons with disabilities. On August 10, 2020, the court issued an order granting partial summary judgment in favor of the plaintiffs and against the defendants in Ability Center, et al. The eggs are surrounded by a frothy foam which hardens into the casing. The sac is about 1 inch (3 cm.) long, rectangular with rounded edges and tan to white. The adult female lays eggs before she dies with the first frosts. What Do Praying Mantis Egg Sacs Look Like? Of these, only about one-fifth of the nymphs will survive to adulthood, which makes the protection of the egg sacs important to preserve the next generation of powerful predators. How many eggs do praying mantis lay? The relatively small insect can lay up to 300 eggs in one sac. The sacs can be difficult to spot but become more evident once trees lose their leaves. That means you should be hunting for cases from late fall into early spring.įemales lay eggs on twigs and stems but also on walls, fences and house siding and eaves. When do mantis sacs hatch? These predatory insects begin to emerge from their casings as soon as temperatures warm in spring. You can find praying mantis egg sacs in much of North America, but in colder regions, you may have to resort to purchasing them for use in the garden.įinding the sacs in your landscape should start with a little praying mantis egg sac info. They have a complex life cycle, which starts with cannibalistic mating and encompasses an overwintering egg period followed by a nymph stage and finally adulthood. They will eat almost anything, including each other, but their pest control of flies, crickets, moths and mosquitoes makes them incomparable natural assistants in the landscape. Praying mantis in the garden provide a safe, biological weapon to combat the summer’s onslaught of pesky insects. What do praying mantis egg sacs look like and when do mantis egg sacs hatch? Read on to learn how to find and care for these amazing insect eggs. They are also lovely to look at and fascinating to watch in action. Praying mantis are highly prized in the garden due to their predaceous nature against the insects that plague our plants. The prehistoric looking insects had a magnetic attraction to children and we swooned with delight while watching the miniature babies erupt from the sac. When I was a child we used to go hunting for praying mantis egg sacs. There’s also a private events space that’s free to use for local nonprofits for fundraisers, and teachers get extra discounts during happy hour.ĮMBARCADERO - The group behind hit restaurants including Dumpling Time, Niku Steakhouse, and Omakase recently debuted their latest project, the Third Floor Restaurant and Lounge, inside the newly renovated Marriott Autograph Collection Hotel, the Jay. Owners Nichole and Jim Simpson serve rotating beers and wines - currently from Sonoma’s Kosich Family Vineyards and San Francisco’s 21st Amendment Brewery - alongside bites including hummus and chips. East Bay Nosh reports the new Lakeshore outpost has already drawn crowds thanks to its popular boiled and pan-fried dumplings, xiao long bao, noodles, and more.ĬLAYTON - Roadside 22 quietly opened in mid-October but, according to the Mercury News, the East Bay restaurant and bar is now fully operational. OAKLAND -Walnut Creek success story Dumpling Hours is setting up shop in the former Rolling Dunes location at 3331 Lakeshore Avenue. Moreover, the San Francisco Standard reports the dive reopened three weeks ago with a slicked-up interior, kicking the eye rollingly-bad tiki-inspired seating areas to the curb. OUTER RICHMOND - After a confusing temporary closure, legendary Geary Boulevard bar Trad’r Sam is back. The Chronicle reports the new lounge is pricey, serving Wagyu beef bites with miso butter for $65 and an upscale riff on the Choco Taco for $18. The new dining room itself is lighter, more buoyant, the couple shares, as the restaurant approaches its 20th anniversary.ĬOW HOLLOW - Above the historic Bus Stop Saloon on Union Street, co-owners Joseph Wallace and Robert Lemons designed ritzy caviar and martini lounge Left Door, premiering in the neighborhood on November 22. There’s a new menu approach, allowing for shorter, less-pricey options or the classic big and bold eight- to 10-course experiences, too. JACKSON SQUARE - As of Tuesday, November 28, Michael and Lindsay Tusk’s three-Michelin-starred Quince is reopened after a meaty renovation. The Sacramento Bee reports restaurant owner Bulent Ozel made sure to include gluten-free items on the menu, too, alongside eight cocktails such as a $14 gin, cucumber, and Sriracha drink. ROSEVILLE - Rose Park Bistro opened on November 30 at 1017 Galleria Blvd, Suite 160, in the Fountains at Roseville outdoor mall, serving butternut squash gnocchi with almonds and teriyaki-flavored steak with lemon mashed potatoes. According to the Mercury News, much of the inspiration comes from Milano in Tiburon, where Batathota cut her teeth in the industry when she came to the country from Sri Lanka 15 years ago. Dolly’s Tavern, a nod to owner Dulanthi Batathota’s nickname, is now open at 10172 San Pablo Avenue. The 28-seat restaurant serves dishes near and dear to the Kaneshiros hearts including Mochiko fried chicken and brown butter sweet potato gnocchi.ĮL CERRITO - There’s a new Italian wine and beer bar from a longtime service worker in the area. Kuma Nori, as per the Chronicle, is unlike Morning Wood Kuma Nori serves only dinner. The Chronicle reports the new space is wrapped in a warm wood interior and the wine menu is organic and sulfate-free.īURLINGAME - After closing much-loved breakfast restaurant Morning Wood in San Mateo this September, owners Chad and Monica Kaneshiro have opened their new venture. SAN ANSELMO - Following the trend of fan-favorite owners opening a new venture, wine bar Voyage comes to Marin County from the team behind Fairfax’s Stillwater, San Francisco’s Junior, and fellow San Anselmo wine shop Souvenir. According to Nosh, the new restaurant continues the husband-and-wife team’s regional, MSG-free, and dairy-free Thai dishes at the new Swan’s Market space. OAKLAND - Akara Sutraromluck and Pim Soithong, the owners of Pintoh Thai, just opened Attraros Thai Eatery at 542 9th Street, Suite B. Did we miss something great? Please, drop us a line. This is a list of the Bay Area’s most notable restaurant and bar openings, with new updates published once a week. The trade-off however is light performance. This is because the bezel setting wraps around the stone holding it in place and offering the gemstone more protection. If you want something for everyday usage then a bezel setting may be a good option. It’s the go-to setting, simple yet stunning, where the stone is usually held up by 4 or 6 prongs. If you’re looking for an amethyst birthstone ring setting that’s more clean and classic, go for the prong setting. Ranging from vintage designs to modern ones, whichever you choose will depend on what style you’re looking for. There are tons of different settings to choose from, all following their own theme. The setting refers to how the amethyst gemstone is placed and set into the metal band. The setting of the ring is what falls to your preference. Not only do they look better than those with some imperfections, but they have higher value too. To get yourself the best and most beautiful looking amethyst you’ll want to look for ones that are as clean as possible. However, any inclusions in lighter stones will be more noticeable. Small inclusions in large, dark Amethyst stones may be tolerated. It also makes the stone look more brilliant since it reflects more light off of it.īe Aware. The clearer your amethyst gemstone is, the fewer blemishes you’ll see inside and on the surface of the stone. If you want to be getting the best value for your money, then it’s a good idea to invest in an amethyst that has high clarity. It shouldn’t matter too much if you just want a beautiful ring and aren’t particular with how it’s cut. If you don’t know much about the different cuts for gemstones, then you can choose whichever looks the prettiest for you. The popularity of the cut greatly affects its pricing and availability. In the end though, you can choose from any cut you like as long as it has the right size and distribution of color for it. This can result in Amethyst windowing and it is not desirable. For example, the cutting of pavilion facets below the critical angle will allow light to pass through the gemstone. Ī key takeaway from this amethyst ring buying guide is that if you are looking for Amethyst rings with more sparkle from the face avoid poorly cut stones. Seen above is a pear shaped amethyst solitaire ring from Luxuria. While still beautiful, Amethyst rings with windowing have lower value and less surface sparkle. When large enough it is possible to read text placed directly behind the gem. PHOTO 2: Some poorly cut Amethyst gemstones will feature an area of the stone, usually in the centre, where it’s possible to see through the stone. Their presence indicates a truly exceptional amethyst. Secondary red hues may be present under incandescent light. Here’s a tip for buying amethyst rings – use incandescent light to reveal the gemstones secondary colors. Whichever shade that you like, be sure to look at their secondary colors as well. However, it’s up to you when choosing the right color since it lies on what you like better. Most consumers generally favour darker stones, ideally with 75-80% tone. Since this stone is plentiful, there is little reason to pay top dollar for amethyst rings with visible inclusions or inferior cutting. If you’re looking for amethyst rings online, it’s best to look at websites that offer quality close-up photos. This lets you see its underlying colors more accurately as well as any imperfections on the stone. When choosing your amethyst ring, it’s best to see it under natural light. Amethysts range in color from light, pinkish purple stones to deep grape hues. A high-quality amethyst will show even color, without visible zoning. As with other colored gemstones, hue, tone, and saturation factors have the most impact on cost. The value for amethysts depends almost entirely on color. Choosing them depends entirely on your preferences. More expensive amethyst will have a darker more concentrated purple compared to their lighter counterparts. You can find that there are also underlying colors like hints of red or blue as their secondary hues.Īmong the key tips for choosing amethyst rings is to understand that color is one of the most important things to keep in mind when buying amethyst jewelry. They come in a variety of shades from light lavender to a deeper violet. The Color of Amethyst gemstone impacts ValueĪmethysts are often distinguished because of their purple color. Below we discuss 7 tips for choosing amethyst rings.ġ. The birthstone for February, amethyst is a very popular gemstone. Amethyst rings are on-trend in 2023 as an alternative engagement ring. So, the octet rule does not apply in such cases.ġ6. SF 6, H 2 SO 4 as both have more than eight valence electrons around the central atom. Due to incomplete octet, LiCl does not obey octet rule. Identify the compound/compounds which does not obey octet rule:Īns. Higher the bond order smaller will be the bond length.ġ5. Bond order is the number of bonds between two atoms while bond length is the equilibrium distance between the nuclei of two bonded atoms in a molecule. What is difference between bond order and bond length and state relation between them?Īns. Therefore, there is no way to arrange five pairs of bonding electrons around a nitrogen atom.ġ4. NCl 5 does not exist because there are no d-orbitals. PCl 5 forms five bonds by using the d-orbitals to “expand the octet” and have more places to put bonding pairs of electrons. A molecule of PCl 5 exists while that of NCl 5 does not.Īns. It is the property of an isolated atom.ġ3. Whereas electron gain enthalpy is the tendency of an atom to attract outside electron. Electronegativity: Electronegativity is the tendency of an atom to attract shared pair of electrons towards itself. How does it differ from electron gain enthalpy?Īns. A plus sign in an orbital indicates a positive wave function while a minus sign in an orbital represents a negative wave function.ġ2. Molecular orbitals are represented by wave functions. Write the significance of plus and minus sign shown in representing the orbitals.Īns. sp 3 : CH 4 sp 2 : C 2 H 4 sp: C 2 H 2ġ1. Name one compound each involving sp 3, sp 2, sp hybridization.Īns. Give two examples of molecules containing coordinate bonding.ġ0. Give one example each for a compound withĩ. In N 2 molecule energy of π2p x and π2p y are _ then σ2p z. The bond in peroxide ion is _ then in superoxide ion.(Weaker /Stronger)ĥ. Out of HF, HCl, HBr and HI, the lowest boiling point is of HCl and highest boiling point is of HF.Ĥ. Out of HF, HCl, HBr and HI, the lowest boiling point is of _ and highest boiling point is of _.Īns. In the solid state, Na + and Cl – ions are strongly held together and are not free to move.ģ. Why is NaCl a bad conductor of electricity in the solid state?Īns. False shape of IF 7 is pentagonal bipyramidalĢ. The shape of SF 6 molecule is octahedral whereas that of IF 7 is square pyramidal.Īns. Revision notes become a crucial thing for those students who are actually serious about scoring good grades.ĭownload CBSE Class 11 Chemistry Revision Notes 2023-24 PDFĪlso, check CBSE Class 11 Chemistry revision notes for other chapters: Through chemical bonding Class 11 notes, it becomes easy for the students to know all the essential things that are present in the chapter. These notes are prepared by some expert Chemistry teachers. Revision notes of Chapter 4 Chemistry Class 11 can help students to get good marks in Class 11th examinations as they cover all the necessary topics, concepts and terms in a fun and simple language for the proper understanding of students.ĭuring the examination Class 11th Chemistry Chapter 4 notes about Chemical Bonding and Molecular Structures become very important. One such chapter is Chapter 4 - Chemical Bonding and Molecular Structures. There are many important, and easy chapters are there in Class 11 Chemistry which can easily help students attain good marks in exams. With proper guidance and with appropriate notes, good marks can easily be achieved in Chemistry in Class 11th. Students generally think Class 11th Chemistry is tough and good marks cannot be scored in this subject, but this doesn't seem right. 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