Q6 of 64 Page 272

Write formulas for the following compounds:

Mercury(II) chloride

HgCl2


The symbol for mercury is ‘Hg’ and for chloride is ‘Cl’ and since the mercury is present in + 2 oxidation state i.e. the formula is HgCl2.


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4

Fluorine reacts with ice and results in the change:

H2O(s) + F2(g) → HF(g) + HOF(g)


Justify that this reaction is a redox reaction.

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Calculate the oxidation number of sulphur, chromium, and nitrogen in H2SO5, Cr2O2–7 and NO–3. Suggest structure of these compounds. Count for the fallacy.

 6

Write formulas for the following compounds:

Nickel(II) sulphate

 6

Write formulas for the following compounds:

Tin(IV) oxide