Question

Oxygen is divalent, Sulphur exhibits valency 2, 4 and 6 due to :

• A. lower E.N
• B. presence of d-orbitals
• C. $S$-being bigger atom
• D. ionisation energy is less

Answer 1

Answer: (B)

presence of d-orbitals

Oxygen is divalent and do not show higher valency such as 4,6 because of unavailability of d electron.
$1s^{2}2s^{2}2p^{6}3s^{2}3p^4$
valency 4:-s
$3s^{2}3p^{4}3d$
6:-s
$3s^{2}3p^{4}3d^2$