Draw a Lewis structure for NHF2 in which the central N atom obeys the octet rule, and answer the following questions based on your drawing.

The number of unshared pairs (lone pairs) on the central N atom is:

The central N atom forms ______ single bonds.

The central N atom forms ______ double bonds.

Draw a Lewis structure for CO2 in which the central C atom obeys the octet rule, and answer the following questions based on your drawing.

The number of unshared pairs (lone pairs) on the central C atom is:

The central C atom forms ____ single bonds.

The central C atom forms ____ double bonds.