Answer:
A compound has atoms with different elements chemically combined in a completed ratio. An element is a chemical substance made of another type of atom.
Because their valence shell have stable electrons so they can't gain or loose electrons.
in ionic bonds the elements should gain or loose electrons
Explanation:
Number of Cm neutrons = 242 - 96 = 146
<span>CaCO3(Calcium Carbonate)</span>
black is good because black was the first color ever