We are asked which of the following pairs of formula/name are correct.
The rules for naming binary ionic compounds are as follows:
1. The metal keeps its name and is named and written first.
– For transition metals, we use Roman numerals to denote its charge.
2. The nonmetal keeps its base name but has its ending changed to –ide.
Which of the following name/formula pairs is correct?
a) Iron(III) phosphate, FePO4
b) Sodium carbonate, NaCO3
c) Cobalt(II) nitrate, CoNO3
d) Calcium perchlorate, CaClO4
e) Ammonium sulfate, (NH4)3SO4