Covalent bond a chemical bond formed by two electrons that are shared between two atoms
ionic bond<span> a chemical bond formed by the electrostatic attraction between ions</span>
metallic bond<span> a bond characteristic of metals in which mobile valence electrons are shared among positive nuclei in the metallic crystal</span>
Answer:
I think its 1.2 cause I divided 15.5 with 12 and got 1.2 as an answer
D. They all have the same number of valence electrons.