Why the no. Of atoms in one mole of. Hydrogen. Gas is double the no. Of atom in mole of helium
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the formula of Hydrogen gas is H2
the no. of molecule present in one mole of H2=6.022×10^23
the no. of atom present in one mole of H2=2×6.022×10^23=12.044×10^23
Now the formula of Helium gas is He
we cannot calculate no. of molecule of Helium because it doesn't make bond with any element
No.of atom present in one of helium=6.022×10^23
the no. of molecule present in one mole of H2=6.022×10^23
the no. of atom present in one mole of H2=2×6.022×10^23=12.044×10^23
Now the formula of Helium gas is He
we cannot calculate no. of molecule of Helium because it doesn't make bond with any element
No.of atom present in one of helium=6.022×10^23
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1 Answer. It is because, hydrogen is a diatomic gas, whereas helium is monoatomic gas. As number of atoms in one molecule of hydrogen are double, as compared to one molecule of helium, therefore one mole of hydrogen has double the atoms,, as compared to helium at the same temperature and pressure.
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