Lithium has an oxidation of +1, and Fluorine an oxidation of -1, therefore if they reacted they would only need one atom of each to become stable. Question 4 options:
True
False

If Magnesium and chlorine reacted, it would require two Magnesium and one chlorine to become stable.

Question 5 options:
True
False

If Calcium reacts with Nitrogen, the proper ratio of atoms to become stable would be 3 calcium's and two Nitrogen's.

Question 6 options:
True
False

When water forms, two hydrogen atoms covalently bond with one oxygen atom, and Hydrogen through this electron sharing takes on the electron configuration of helium, and oxygen takes on the electron configuration of Neon.

Question 7 options:
True
False