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Atoms

The ratio of ...

Question

The ratio of phosphorous atoms present in calcium phosphide and magnesium phosphate is:

A

1 : 2

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B

2 : 1

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C

1 : 3

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D

1 : 1

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Solution

The correct option is D 1 : 1
The chemical formula of calcium phosphide is $C a_{3} P_{2}$ and that of magnesium phosphate is $M g_{3} (P O_{4})_{2}$ . Thus the ratio of phosphorous atoms is $2 : 2 = 1 : 1.$

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