Question

Nitrogen atomic number 7 and phosphorus atomic number 15 belong to group 15 of the periodic table at the electronic configuration of these two elements which of these will be more electronegative why

Answer 1

Hey friend...
Here is your answer....

Nitrogen is more EN than phosphorus because on moving down to a group the no. Of shell increases and the effective nuclear charge is decrease.
So, EN is decrease......

HOPE that it will help you

Answer 2

E.N:

N=7

P=2.19

Electronegativity is defined as the ability of an atom in a molecule to attract electrons to itself. The greater an atom’s electronegativity, the greater its ability to attract electrons to itself. The electronegativity of an atom in a molecule is related to the atom’s ionization energy and electron affinity, which are properties of isolated atoms. An atom with a very negative electron affinity and a high ionization energy both attracts electrons from other atoms and resists having its electrons attracted away; therefore it is highly electronegative.

The same in N & P case.