1) a)
Fe2+ = ferrous and Fe3+ = ferric
Other cations:
Sn2+ = stannous ion and Sn3+ = stannic
Co2+ = cobaltous and Co3+ = cobaltic
Pb2+ = plumbous and Pb4+ = plumbic
2) b)
Sulfate is an anion represented as: SO₄²⁻
Other Cations:
Iron(III) ion = Fe3+
Ca2+= calcium divalent cation
Mercurous ion = Hg₂²⁺
3) a)
Ionic compounds are composed of both, an anion (negatively charged ion) and a cation (positively charged ion). The bond is formed by the transfer of electrons from cation to anion.
4) c)
Sulfur hexafluoride (SF6) is a neutral molecule composed of two elements: S and F. Hence, it is a binary compound.
5) c)
Molecular compounds tend to be inorganic compounds typically composed of two or more non-metals. For example: water H2O and carbon dioxide CO2.
6) d)
The compound MxTy is not and acid and M is a non-metal. Thus it could be a metalloid, a binary molecular compound.
