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  • Which of the following represents a correct chemical formula? Name it. (a) CaCl (b) BiPO_{4} (c) NaSO_{4} (d) NaS

Which of the following represents a correct chemical formula? Name it.

(a) CaCl
(b) BiPO_{4}
(c) NaSO_{4}
(d) NaS

Answers (1)

Answer: B

Solution.

The correct formula is CaCl2 (valency of Ca = 2, valency of Cl = 1).
The correct formula is Na_{2}SO_{4} (valency of Na = 1, Valency of SO_{4} = 2).
The correct formula is Na_{2}S (valency of Na = 1, valency of sulphide = 2).
BiPO_{4}, is the correct formula, its name is bismuth phosphate. Bismuth phosphate is right because both ions are trivalent.

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