Question

sulphur dioxide is a colourless pungent smelling gas and is a major air pollutant

(a) write the electronic configuration of its constituent element sulphur and oxygen

(b) write valency of sulphur and oxygen

(c) are sulphur and oxygen isotopes of same element .explain your answer

Answer 1

1. Electronic configuration of sulphur: 1s² 2s² 2p⁶ 3s² 3p⁴

Electronic configuration of oxygen: 1s² 2s² 2p⁴

2. Valency of sulphur: +4

Valency of oxygen: -2

3. No sulphur and oxygen are not the isotopes of same element. Isotopes are compounds of an element having same atomic number but different mass numbers. But in sulphur atomic number is 16 while atomic number of oxygen is 8.