Correct: NaBr, WO2, MgBr2, CaO, Li2S, cations are usually metals, anions are usually nonmetals, NaCl, Aluminum Oxide, transfers electrons, Creates ions, Metal and nonmetal , Usually soluble in water, The number of valence electrons is important, Incorrect: cations are usually nonmentals , anions are usually metals, uses numerical prefixes (such as mono, di, tri), SO3, S2Cl2, H2O, Iodine heptafluoride, shares electrons, two metals, doesn't need to make the octet rule, has polar and non-polar bonds, non usually soluble in water, Group 18 elements , Form in between molecules,

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