The formula of metal oxide of a metal oxide of a metal A is $A_{2} O_{3}$ . Determine the formula of its phosphate.

A_{3} P O_{4}

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A_{2} (P O_{4})_{2}

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A (P O)_{2}

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A P O_{4}

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Solution

The correct option is D $A P O_{4}$
Given that the formula of metal oxide is $M_{2} O_{3}$ . Thus the valency of metal is 3. The electrovalency of the phosphate ion ( $P O_{4}$ ) is -3, thus the formula of metal phosphate is $M P O_{4}$ .

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The formula of metal oxide of a metal oxide of a metal A is A2O3. Determine the formula of its phosphate.

The correct option is D APO4Given that the formula of metal oxide is M2O3. Thus the valency of metal is 3. The electrovalency of the phosphate ion (PO4) is -3, thus the formula of metal phosphate is MPO4.

The formula of metal oxide of a metal oxide of a metal A is $A_{2} O_{3}$ . Determine the formula of its phosphate.

The correct option is D $A P O_{4}$
Given that the formula of metal oxide is $M_{2} O_{3}$ . Thus the valency of metal is 3. The electrovalency of the phosphate ion ( $P O_{4}$ ) is -3, thus the formula of metal phosphate is $M P O_{4}$ .