Answer:
Explanation:
Diagonal relationship of lithium with magnesium
1) Both have almost similar electronegativities. 2) Both Li and Mg are quite hard. They are harder and lighter than other elements in their respective groups. 3) Both LiOH and Mg(OH)2 are weak bases.
There will be 16 electrons in O2-
gamma
I think the answer should be B. Number of valence electrons
ionic bonding occurs when unstable atoms donates one or more valence electrons to a unstable atom