Question

The number of atoms present in 0.1 mole of P₄ (at. mass = 31) is ______.

Options

• 2.4 × 10²⁴ atoms

• same as in 0.05 mol of S₈

• 6.02 × 10²² atoms

• same as in 3.1 g of phosphorus

Answer 1

The number of atoms present in 0.1 mole of P₄ (at. mass = 31) is same as in 0.05 mol of S₈.

Explanation:

0.1 mole P₄ contains = 4 × 0.1 × 6.02 × 10²³

0.05 mole of S₈ contains = 8 × 0.05 × 6.02 × 10²³ atoms