Explain why Lithium is a cation?

Unlike the other alkali metals, lithium has a single valence electron and can easily be delivered to form a cation. Of this reason, lithium is a strong heat and electricity conductor as well as a highly reactive element although it is the least reactive of alkali metals.

answer: good job it's all correct !

explanation:

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.