Question

Which of the following molecules has bond polarity but no molecular polarity?

A:     N2

B:     SCl2

C:     NH3

D:     CO2

The VSEPR theory is used to predict molecular shapres, based on the arrangement of-

A:     lone pairs of electrons on the outer atoms

B:     lone pairs of electrons on the central atom

C:     bonding pairs of electrons on the central atom

D:     bonding and lone pairs on the central atom

Which of these molecules has a central atom surrounded by 5 regions of electron density (5 electron clouds)?

A:     CCl4

B:     BrCl5

C:     PCl3

D:     ICl3

Which of the following substances has a central atom with non-bonded electron pairs?

A:     SO3

B:     BF3

C:     NH3

D:     CH4

Question 22 (ID=542019)

Which statement explains why a molecule of CH4 is nonpolar?

A:     The bonds between the atoms in a CH4 molecule are polar.

B:     The bonds between the atoms in a CH4 molecule are ionic.

C:     The geometric shape of a CH4 molecule distributes the charges symmetrically.

D:     The geometric shape of a CH4 molecule distributes the charges asymmetrically.

Answer 1