Please i need these twoo i have an exam

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

Classify this reaction: 2al+n2-> aln.