Question

Find the total number of electron present in 0.1418 of chlorine

Answer 1

Correct Question: Find the total number of electron present in 0.1418 grams of chlorine.

Solution: Molar Mass of Chlorine = 35.5 × 2 (Due to it's diatomic form) = 71 g/mol

→ 1 mol of Chlorine weighs = 71 gram

→ 71 gram = weight of 6.022 × 10²³ Cl₂ molecules

1 chlorine molecule contains = 34 electrons

→ 71 gram = weight of 6.022 × 10²³ × 34 electrons

→ 1 gram contain = 6.022 × 34 × 10²³/71 electrons

→ 0.1418 gram = 6.022 × 34 × 10²³/71 × 0.1418

→ 0.41 × 10²³ or 4.1 × 10²² electrons