Al2O3
A lone pair is elements in a chemical reaction that are not used in the reaction.
A roman numeral in parentheses follows the name of the metal... apex
the shared valence electron pairs repel each other.
molarity
C.A molecule that has a symmetrical shape will be a nonpolar molecule.
A nonpolar covalent bond involves an even sharing of electrons.
C.The charges on the ions
Helium has the highest first ionization energy and francium has the lowest first ionization energy.