Question

plss ans . irrelevant ans will be reported​

Answer 1

Answer:

B and C

Explanation:

The electron gain enthalpy of chlorine is more than fluorine because in it the added electron goes to the smaller energy level (n=2) and hence suffers significant repulsion from the electrons already present in this shell.

First ionisation enthalpy of Nitrogen is more than oxygen due to half filled p orbital which makes the nitrogen more stable.