Question

nitrogen (atomic number 7 ) and phosphorus (atomic number15) belong to group 15 of modern periodic table
which of these will be more electronegative and why​

Answer 1

Answer:

1 Answer. N (2,5) ; P (2, 8, 5) ; Nitrogen will be more electronegative because its atom has small size due to which the attraction of its nucleus for the incoming electron is more.

Answer 2

Answer:

The electronic configurations of the two elements are nitrogen (Z = 7) 2, 5; Phosphorus (Z = 15) 2,8, 5.

Since the size of nitrogen is small as compared to phosphorus, it has a greater tendency to take up electrons. It is therefore, more electro-negative than phosphorus.