Question

Covalency of oxygen cannot exceed $2$ unlike sulphur which can show $+4$ or $+6$ because

• A. oxygen atom does not have $d$-orbitals
• B. oxygen atom has two unpaired electrons in its valence shell
• C. oxygen can form a double bond with another oxygen atom
• D. electrons of oxygen atom cannot be promoted to $d$-orbitals due to its small size

Answer 1

Answer: (A)

oxygen atom does not have $d$-orbitals

Answer 2

Answer (a) oxygen atom does not have $d$-orbitals