Question

What is the electronic configuration of phosphorus ion?

Answer 1

PHOSPHORUS:-

ATOMIC NUMBER =15

ATOMIC SYMBOL= P

ATOMIC MASS = 30.9 u = 31 u[APPROX.]

CONFIGURATION IS 2,8,5

Nearest Noble Gas is ARGON

ARGON :-

ATOMIC NUMBER = 18

CONFIGURATION IS 2, 8 ,8

To achieve the configuration of the nearest noble gas and become stable ,phosphorus has to gain 3 more electrons.

so,

VALENCY OF PHOSPHORUS = 3-

PHOSPHORUS ION:-

SYMBOL = $P^{3-}$

SO,

ELECTRONIC CONFIGURATION OF ARGON IS SAME AS ELECTRONIC CONFIGURATION OF PHOSPHORUS ION AS PHOSPHORUS HAS GAINED 3 ELECTRONS TO BECOME STABLE .

SO,

PHOSPHORUS ION:-

ATOMIC NUMBER = 15

ELECTRONS PRESENT = 18

CONFIGURATION WILL BE:-

2,8,8