Ch 5 more Bonding

Ch 5 more Bonding - More Chapter 5 Problems Chemistry 101...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
More Chapter 5 Problems Chemistry 101 Dr. Nielson 1. Complete all of the following steps for each compound below. a. Draw the Lewis structure, including all nonzero formal charges. b. Determine the electron-region geometry. c. Determine the molecular shape (or ion shape). d. Estimate the values of the bond angles. If a bond angle is distorted from what would be predicted by the shape, then indicate if it is > or < than that value. Lewis Electron-region Molecular Angles structure geometry shape NF 3 O 2 CHCl 3 SOCl 2 SF 6 XeF 4 ClF 3 CO 3 2- ClO 2 - NO 2 -
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2. The electron-region geometry can also be determined around each atom in larger molecules. The geometry is still based on the model of VSEPR (Valence Shell Electron Pair Repulsion). A shape can also be determined around each atom, but it is no longer the molecular shape, because the molecule is much larger than that atom and the atoms to which it is bonded. Determine the electron-region geometry around each C, N, and/or O in the following molecules. CH 3 NH 2 CH 3 CN CH 3 CH 2 OH 3. Once you know the concepts of bond dipoles, Lewis structures, and molecular shape, you can determine whether a molecule is polar or nonpolar. Polar molecules have a dipole moment where the electron density is unevenly distributed in a molecule, because of electronegativity differences between atoms. Polar molecules must have polar bonds. Nonpolar molecules have even distribution of electron density in the molecule. Some nonpolar molecules have nonpolar bonds and some have polar bonds that are oriented so that they cancel out each other’s bond dipoles. If the molecule has symmetry and the central atom is surrounded by identical atoms and
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/08/2012 for the course CHEM 101 taught by Professor Anderson,w during the Fall '08 term at BYU.

Page1 / 7

Ch 5 more Bonding - More Chapter 5 Problems Chemistry 101...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online