Which best describes how the chemical reaction
that produces nitrogen gas inflates the airbag?

A. The sodium azide
quickly breaks apart.

B. The sodium azide suddenly melts.

C. The sodium azide rapidly forms a precipitate.

A.

Explanation:

When a car crash occurs, the electrical signals indirectly stimulate the decomposition of sodium azide , causing it to break a part and to release sodium metal and nitrogen gas, and nitrogen is used to inflate the bag.

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.