JEE Advance - Chemistry (1982 - No. 4)
The mass of a hydrogen atom is ______ kg.
1.673 × 10-24
1.673 × 10-27
9.109 × 10-31
6.022 × 1023
1.008
Explication
The mass of a hydrogen atom, which is predominantly a proton for the most common isotope ($^1H$), is about $1.673 \times 10^{-27}$ kilograms. Therefore, we can say the mass of a hydrogen atom is approximately $1.673 \times 10^{-27}$ kg.