Question

एक कारण देकर बताएँ कि नाइट्रोजन और फॉस्फोरस को
आवर्त सारणी के एक ही वर्ग में क्यों रखा गया है?​

Answer 1

Step-by-step explanation:

The electronic configuration of nitrogen N(7)=2,5

Phosphorous P(15)=2,8,5

N is more electronegative than P.

From top to bottom down a group, electronegativity decreases. This is because number of shell increases down a group, and thus there is an increased distance between the valence electrons and nucleus, or a greater atomic radius.