Question

Which of the following is electronic configuration of phosphorus?
a) 2,8,2
b) 2,8,5
c) 2,8,6
d) 2,8,8
1.​

Answer 1

Answer:

according to me, it is is 2,8,5

Answer 2

Answer:

2,8,5

Explanation:

Atomic number of phosphorus is 15

Hence it has 3 shells K,L AND M

Its first 2 shells are completely filled and third shell is incomplete which neither completes octate nor duplate

Hence its valency is 3 and its electronic configuration is 2,8,5