The answer is D. A positively charged sodium Ion and a negatively charged chlorine ion form an ionic bond.
C.) iron oxide <span>is responsible for the red color of Mars.
Hope this helps!</span>
The two of them both made models of the current atom, which was very excellent because now we could imagine how an atom would look. I would say that the best one was the electron orbital configuration because we needed to know what valence electrons are.
