Question

1. The unite length convenient on the atomic scale is known as an angstrom and k
denoted by A: 1 - 10 m. The size of a hydrogen atom is about 0.5 A. What is the
total atornic volume in m' of a mole of hydrogen atoms ?
pls can U give answer fast as possible....​

Answer 1

Radius of hydrogen atom, r = 0.5 Å = 0.5 × 10-10 m

Volume of hydrogen atom = (4/3) π r3

= (4/3) × (22/7) × (0.5 × 10-10)3

= 0.524 × 10-30 m3

1 mole of hydrogen contains 6.023 × 1023 hydrogen atoms.

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

= 3.16 × 10–7 m3