<h2>
Answer: c
. Alkaline earth metals (Group 2)</h2>
<h3>
Explanation:</h3>
Group 2 metals have 2 electrons in their outer shell. These two electrons are usually found in the s orbital, hence the s².
The smallest particle of a covalently bonded compound is an atom.
It gets hotter because the core is the outside of the eath and the mantel is the more inside/hope i helped