Question

11. If the valency of oxygen is 2, derive the valencies of the other elements present in
the following oxides:
a. Sodium oxide (Na,O), Zinc oxide (ZnO), Lead oxide (PbO), Aluminium oxide
(Al,O2), Calcium oxide (CaO), Barium oxide, Copper(II) oxide
b. Name the elements present in the following compounds and write their valency.
(i) Copper (II) hydroxide (ii) Sulphur dioxide
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Answer 1

Answer:

(I) copper....

Explanation:

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Answer 2

Answer:

i Copper..............