Answer the questions in the table below about the shape of the hydrogen cyanide (HCN) molecule. How many electron groups are around the central carbon atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central carbon atom? (You may need to use the scrollbar to see all the choices.) 1 (choose one)

Answer the questions in the table below about the shape of the hydrogen cyanide (HCN) molecule. How many electron groups are around the central carbon atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central carbon atom? (You may need to use the scrollbar to see all the choices.) 1 (choose one)

Living by Chemistry

2nd Edition

ISBN:9781464142314

Author:Angelica M. Stacy

Publisher:Angelica M. Stacy

ChapterU2: Smells: Molecular Structure And Properties

Section: Chapter Questions

Problem 8STP

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ELECTRONIC STRUCTURE AND CHEMICAL BONDING Predicting the arrangement of electron groups around the centr... Answer the questions in the table below about the shape of the bromodifluoride (BrF, anion. How many electron groups are around the central bromine atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central bromine atom? (You may need to use the scrollbar to see all the choices.) (choose one) X Ś
O ELECTRONIC STRUCTURE AND CHEMICAL BONDING Predicting the arrangement of electron groups around the centr... Answer the questions in the table below about the shape of the tetrafluoroiodide (IF How many electron groups are around the central iodine atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central iodine atom? (You may need to use the scrollbar to see all the choices.) 0 (choose one) × Ś anion.
Molecular Shape:trigonal planar Questions: (Complete sentences are not necessary) 1. Examine the Lewis structure for each of the molecular shapes formed above. (ignore BrF!) Complete the following table based upon both the number of unshared electron pairs around the central atom and also the number of bond groups that are around the central atom. For example, in the following Lewis structure of PBr,, phosphorus (the central atom) has one pair of unshared electrons and three bond poups surrounding it. Br: Br P: : Br: (Note: single, double, and triple bonds all count as single bond groups) Molecular Shape Number of Unshared Electron Pairs Around the Central Number of Bond Groups Around Central Atom Atom Linear Bent Trigonal Planar Trigonal Pyramidal Tetrahedral 2. What is the electrostatic charge of all electron groups. either shared (Le. bonds) or unshared? mnel cach other?
Answer the questions in the table below about the shape of the phosphorus pentabromide (PBr.) molecule,. How many electron groups are around the central phosphorus atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central phosphorus atom? (You may need to use the scrollbar to see all the choices.) (choose one) く
Molecular Shape.trigonal planar Questions: (Complete sentences are not necessary) 1. Examine the Lewis structure for each of the molecular shapes formed above. (ignore BrF!) Complete the following table based upon both the number of unshared electron pairs around the central atom and also the number of bond groups that are around the central atom. For example, in the following Lewis structure of PBr,, phosphorus (the central atom) has one pair of unshared electrons and three bond groups surrounding it Br P: (Note: single, double, and trıple bonds all count as single bond groups) Number of Unshared Electron Pairs Around the Central Number of Bond Groups Around Central Atom Molecular Shape Atom Linear Bent Trigonal Planar Trigonal Pyramidal Tetrahedral 2. What is the electrostatic charge of all electron groups, either shared (Le. bonds) or unshared?
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4. Lewis dot structures are good tools for showing the arrangement of valence electrons in a molecule. They don't however convey correct information about the shape of a molecule. A student described the shapes of the molecules shown below. Both are incorrect. Write an explanation for this student explaining what he did wrong and giving the correct shape of each molecule based on VSEPR theory. Lewis Structure Student identified molecule geometry as... Н—О—H Linear WATER H H:C:H Square planar H МЕТHANE