Question

the formula of its (al sulphate, and (b) hydroxide. Cos and
7. Name three metals whose symbols are derived.from:
260
(a) the first letter of their names.
(b) their Latin names.
8. Give the name and valency of the following radicals:
(a) HCO3
(b) PO4
(c) C204
(d) Br
(e) NH4
9. Which of the following are divalent radicals?

(a) Calcium
(b) Sodium
(c) Aluminium
(d) Sulphate​

Answer 1

Explanation:

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