Write formulas for the following compounds: (a) Mercury (II) chloride (b) Nickel (II) sulphate (c) Tin (IV) oxide (d) Thallium (I) sulphate (e) Iron (III) sulphate (f) Chromium (III) oxide
Write formulas for the following compounds: (a) Mercury (II) chloride (b) Nickel (II) sulphate (c) Tin (IV) oxide (d) Thallium (I) sulphate (e) Iron (III) sulphate (f) Chromium (III) oxide

Solution:

Formulas are:

(a) Mercury (II) chloride

H g C l_{2}

(b) Nickel (II) sulphate

\mathrm{NiSO}_{4}

(c) Tin (IV) oxide

\mathrm{SnO}_{2}

(d) Thallium (I) sulphate

\mathrm{Tl}_{2} \mathrm{SO}_{4}

(e) Iron (III) sulphate

\mathrm{Fe}_{2}\left(\mathrm{SO}_{4}\right)_{3}

(f) Chromium (III) oxide

\mathrm{Cr}_{2} \mathrm{O}_{3}