Question

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Answer 1

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.