Question

Assertion (A) Oxygen has less negative electron gain enthalpy than sulphur.
Reason (R) Oxygen has a compact nature.

• A. Both $A$ and $R$ are correct; $R$ is the correct explanation of $A$.
• B. Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$.
• C. $A$ is correct; $R$ is incorrect.
• D. $R$ is correct; $A$ is incorrect.

Answer 1

Answer: (A)

Due to the compact nature of oxygen, it has less negative electron gain enthalpy than sulphur. However, from sulphur onwards, the value of electron gain enthalpy again becomes less negative upto polonium.