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Q.

The number of atoms present in 4 grams atom of hydrogen (H) is

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a

2×6.023×1023

b

4×6.023×1023

c

6.023×1023

d

4

answer is C.

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Detailed Solution

We know that one gram atom means one mole of the substance. So, 4 gram atoms of hydrogen has 4×6.023×1023 atoms of hydrogen.

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