Question

Nitrogen (atomic number-7) and Phosphorus (atomic

number-15) belong to group -15 of the modern periodic table.

(i) Write the electronic configuration of these two elements.

(ii) Which of these will be more electro negative and why? in hindi ​

Answer 1

go to periodic table and see

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.