Question

Which of the following represents a correct chemical formula?

a.Na2CO3

b.Mgo

c.CaCl

d.Nao

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Answer 1

Answer:

A is ur answer of ur question

Explanation:

think so

Answer 2

Answer:

Valency of Ca is 2 and Cl is 1. Hence, the correct formula for calcium chloride is CaCl2. Option A is incorrect.

Valency of Bi is 3 and (PO4) i.e. phosphate ion is also 3. Hence, the formula of bismuth phosphate is BiPO4. Option (B) is the correct answer.

Valency of Na is 1 and sulphate, SO4 is 2. Hence, formula of sodium sulphate is Na2SO4. Option C is incorrect.

Valency of Na is 1 and sulphur is 2. Hence, the formula of sodium sulphide is Na2S. Option D is incorrect.