Chapter 11

Question 1

Polar bond electronegativity difference is between-

Answer 1

0.4-2.0

[less is covalent, more is ionic]

Question 2

For 3 electron groups, bond angles are always:

Answer 2

120

or less than 120 if bent with lone pair

Question 3

for 3 electron groups, the electron geometry is always

Answer 3

trigonal planar

Question 4

for 2 electron groups, electron and molecular geometry is always:

Answer 4

Linear, 180 angle

Question 5

For 4 electron groups, electron geometry is always:

bond angle is:

Answer 5

tetrahedral

109.5 or less than 109.5 if with lone pairs

Question 6

electron and molecular geometry are the same if:

Answer 6

the central atom does not have a lone pair

Question 7

with 3 or 4 electron groups, and 2 lone pairs, the molecular geometry is:

Answer 7

bent

Question 8

with 4 electron groups and 3 lone pairs, the molecular geometry is

Answer 8

trigonal pyramidal

Question 9

if the molecule does not have any polae bonds, then

Answer 9

the molecule is non-polar

Question 10

if the molecule has polar bonds, and the dipoles cancel, then

Answer 10

the molecule is non-polar

Question 11

if the molecule has polar bonds and the dipoles do NOT cancel, then

Answer 11

the molecule is polar