Question

Please help me I will give you the brain thing and extra points. image below.

Answer 1

It’s def lithium I looked it up jus in case

Answer 2

Lithium

Step-by-step explanation:

"Like the other alkali metals, lithium has a single valence electron that is easily given up to form a cation. Because of this, lithium is a good conductor of heat and electricity as well as a highly reactive element, though it is the least reactive of the alkali metals."