Use this condensed chemical structure CH3—CH2—NH2
The condensed chemical structure of ethanamine.
Some facts about the ethanamine molecule:
number of carbon-carbon single (C - C) bonds:
number of carbon-hydrogen single (C H) bonds:
number of nitrogen-hydrogen sing le (N H) bonds:
number of lone pairs:

number of carbon-carbon single (C - C) bonds: 1

number of carbon-hydrogen single (C H) bonds: 5

number of nitrogen-hydrogen sing le (N H) bonds:2

number of lone pairs: 1

Explanation:

Ethanamine is a colourless gas having a strong 'ammonia- like' odour. It contains the -NH2 group which makes it an amine. It contains one carbon-carbon bond, five carbon-hydrogen bonds and two nitrogen-hydrogen bonds.

Nitrogen, being sp3 hybridized in the compound has a lone pair of electrons localized on one of the sp3 hybridized orbitals of nitrogen while one sp3 hybridized orbital of nitrogen is used to form a carbon-nitrogen bond. The other two sp3 hybridized orbitals on nitrogen are used to form the two nitrogen-hydrogen bonds.

the answer is d. 74.02