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Question:
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
Answer:

 

(a) Mercury (II) chloride:

HgCl2

(b) Nickel (II) sulphate:

NiSO4

(c) Tin (IV) oxide:

SnO2

(d) Thallium (I) sulphate:

Tl2SO4

(e) Iron (III) sulphate:

Fe2(SO4)3

(f) Chromium (III) oxide:

Cr2O3

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