Question

Number of atoms (as multiples of $N_o$) of hydrogen present in $18$ g of water is:

Answer 1

Mole of $H_{2}O=18/18=1$.

As each mole of water contains two moles of hydrogen.

So one-mole of water contains $2\times 6.02\times {10}^{23}=2N_o$ atoms of hydrogen.

Thus, the correct answer is 2