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.