Question

The true statements among the following is

• A. Li and Mg exhibit diagonal relationship
• B. O has the least electron affinity in the group 16 elements
• C. Nitrogen has positive electron gain enthalpy
• D. all of the above

Answer 1

The correct option is D all of the above

A) Due to similar charge/size ratio, Li and Mg exhibit shows similar physical and chemical properties.

B) Due to small size, oxygen has the poor electron affinity due to inter electron repulsions.

C) Due to stability of half filled electronic configuration, N has positive electron gain enthalpy