C. Si 7 C 3 D. Cannot determine with the information given. Name the following compound and indicate whether it is ionic or molecular. Magnesium oxide is produced by the combustion of magnesium. The masses of the proton and neutron are nearly the same. Electrons make up most of the mass of an atom.
Atoms are indivisible.
The charges of the electron and proton are exactly equal but opposite in sign. A. 1 and 2 B. 1 and 3 C. 1 and 4 D. 2 and 3 21. Poseidon, while bored, began counting the number of water molecules in the ocean. More information must be provided.