What happens when Mg forms an ionic bond? o it gains one electron and becomes a -1 anion
o it loses one electron and becomes a +1 cation
o It loses 2 electrons and becomes a +2 cation
It shares electrons with the other atom in the bond

Look at picture
ASAP please will mark as brainlist don’t got much time

When this reaction occurs, strong ionic bonds form between two oppositely charged particles (ions). Magnesium is a group II metal, and therefore has two electrons in it's highest energy level (or outermost electron shell). ... Therefore, they readily take up these two electrons to form negatively charged O2- ions

30litre of li2o is 1.0002mole approximately 1 mole

I'm not sure but i will try to find out