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Question

124amu of P4 will contain________.


A

4 Atoms of Phosphorus

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B

4NA Atoms of Phosphorus

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C

NA Molecules of Phosphorus

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D

Both (B) and (C)

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Solution

The correct option is D

Both (B) and (C)


The atomic mass of P = 31amu.

Molecular mass of P4 = 4 × 31 = 124amu.

So, 124 g of P4 contains 1 mole of P4 = NA molecules of Phosphorus=4NA atoms of P(Phosphorus).

Hence, option (D) is correct option.


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