Question

The unit of length convenient on the atomic scale is known as an angstrom and is denoted by. The size of a hydrogen atom is aboutwhat is the total atomic volume in m³ of a mole of hydrogen atoms?

Answer 1

Radius of hydrogen atom, r = 0.5 = 0.5 × 10^–10 m

Volume of hydrogen atom =

1 mole of hydrogen contains 6.023 × 10²³ hydrogen atoms.

∴ Volume of 1 mole of hydrogen atoms = 6.023 × 10²³ × 0.524 × 10^–30

= 3.16 × 10^–7 m³