Chapter 9 Quiz

Question

Are the O-N-O bond angles greater in the nitrite (NO2-) ion or nitrate ion (NO3-)?

Answer

Nitrate has the greater bond angle because double bonds take up more space than single bonds
Nitrate has the greater bond angle because nitrite's lone pairs take up more space than bonds
Nitrite has the greater bond angle because a trigonal planar bond angle is greater than a tetrahedral bond angle
Nitrite has the greater bond angle because a linear bond angle is greater than a trigonal planar bond angle

Question

The following molecules contain polar covalent bonds. Which are overall nonpolar molecules?

Answer

Question

Does COS have a dipole moment? Choose the answer that best explains the reason for your choice

Answer

COS has a dipole moment because it is asymmetric and the dipole moments do not completely cancel
COS has no dipole moment because the molecule is linear and dipole moments cancel in linear molecules
COS has no dipole moment because it is bent and the dipole moments cancel
COS has a dipole moment because the molecule is bent and the dipole moments combine

Question

Which molecule is more polar in each pair? Pair #1: NH3 or PH3 Pair #2: CCl2F2 or CBr2F2

Answer

Question

Which of the following is NOT a potential consequence of molecular shape?

Answer

Question

An atom in a molecule has a steric number of 4. The atom also has one lone pair of electrons. What is the molecular geometry around this atom?

Answer

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	Created by Kristen Wislowski over 4 years ago