Chemistry Question on Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions

Question

Write the formulae 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

Accepted Answer

(a) Mercury (II) chloride:
$HgCl_2$

(b) Nickel (II) sulphate:
$NiSO_4$

(c) Tin (IV) oxide:
$SnO_2$

(d) Thallium (I) sulphate:
$Tl_2SO_4$

(e) Iron (III) sulphate:
$Fe_2(SO_4)_3$

(f) Chromium (III) oxide:
$Cr_2O_3$