Q.

The number of electrons in a mole of hydrogen molecule is

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a

6.02  ×  1023

b

12.046  ×  1023

c

3.0115  ×  1023

d

Indefinite

answer is B.

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Detailed Solution

one mole of any substance contains Avogadro's number of entities(particles or atoms or molecules)One H2 molecule contains ‘2’ electronsOne mole of H2 contains  2×6.023×1023 electrons                                                       =12.046×1023 electrons
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