Which name/formula pairs are incorrect? A.calcium dichloride / CaCl2 B.triphosphorous hexabromide / P3Br7 C.vanadium(v) oxide / V2O5 D.arsenous acid / H3AsO3 E.hydroarsenic acid / H3AsO4 F.potassium periodate / KIO4 G.iron(iii) silicate / Fe4(SiO4)3
Which name/formula pairs are incorrect