Question

Nitrogen is relatively inactive element because:

• A. its atom has relatively stable atomic configuration.
• B. it has low radius.
• C. its electronegativity is high enough.
• D. dissociation energy of molecule is high enough.

Answer 1

The correct option is D dissociation energy of molecule is high enough.

Nitrogen is mostly exists as $N_2$ stable molecule with a triple bond between two nitrogen atoms which can not be easily brakable.it requires much energy to break $N_2$ molecule(Bond dissociation energy) and let it make reactive. So that is the reason why Nitrogen is inactive element.
Hence Option D is correct.