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Molecular Geometry #3

Total questions: 15

Worksheet time: 12mins

Name
Class
Date
1.

Which of the following statements is FALSE?

a)

Ionic bonding results from the transfer of electrons from one atom to another.

b)

Dipole moments result from the unequal distribution of electrons in a molecule.

c)

The electrons in a polar bond are found nearer to the more electronegative element.

d)

A molecule with very polar bonds can be nonpolar.

e)

Linear molecules cannot have a net dipole moment.

2.

Which of the following bonds is least polar?

a)

C--O

b)

O--H

c)

S--Cl

d)

Br--Br

e)

I--F

3.

Which of the following molecules has a dipole moment?

a)

CO2

b)

SO2

c)

CH4

d)

I2

e)

none of these

4.

Choose the molecule with the strongest bond.

a)

CH4

b)

HF

c)

H2O

d)

NH3

e)

all are equal

5.

Of the following, which molecule has the largest bond angle?

a)

O3

b)

OF2

c)

HCN

d)

H2O

e)

more than one of these has equally large bond angles

6.

The Cl–Kr–Cl bond angle in KrCl4 is closest to

a)

90o

b)

180o

c)

120o

d)

109o

e)

360o

7.

Which of the following atoms cannot exceed the octet rule in a molecule?

a)

N

b)

S

c)

P

d)

I

e)

all atoms must obey the octet rule

8.

Choose the electron dot formula that most accurately describes the bonding in CS2.

a)
b)
c)
d)
e)
9.

Complete the Lewis structure for the molecule shown. Then decide how many sigma and pi bonds there are in the molecule.

a)

6 sigma, 0 pi

b)

12 sigma, 2 pi

c)

12 sigma, 3 pi

d)

13 sigma, 3 pi

e)

16 sigma, 0 pi

10.

In the Lewis structure for ICl2–, how many lone pairs of electrons are around the central iodine atom?

a)

0

b)

1

c)

2

d)

3

e)

4

11.

What type of structure does the XeOF2 molecule have?

a)

trigonal planar

b)

trigonal pyramidal

c)

tetrahedral

d)

T-shape

e)

octahedral

12.

Which ion is planar?

a)

NH4+

b)

CO32-

c)

SO32-

d)

ClO3-

e)

all are planar

13.

According to VSEPR theory, which of the following species has a square planar molecular structure?

a)

TeBr4

b)

BrF3

c)

IF5

d)

SCl2

e)

XeF4

14.

How many of the following have all of their atoms in the same plane? H2C=CH2 F2O H2CO NH3 CO2 BeCl2 H2O2

a)

3

b)

4

c)

5

d)

6

e)

7

15.

What is the shape of PF5?

a)

trigonal pyramidal

b)

trigonal bipyramidal

c)

square planar

d)

T-shape

e)

octahedral

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