Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions:
Mg+2, Cr+4, I−, S−2

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.