Among the following elements (Whose electronic configuration is given below) the one having the highest ionisation energy is
(1) [Ne] 3s² 3p³ (2) [Ne] 3s² 3p⁴ (3) [Ne] 3s² 3p⁵ (4) [Ar] 3d¹⁰ 4s² 4p²

Question

Among the following elements (Whose electronic configuration is
given below) the one having the highest ionisation energy is
(1) [Ne] 3s2 3p3 (2) [Ne] 3s2
3p4 (3) [Ne] 3s2 3p5 (4) [Ar]
3d10 4s2 4p2

Shubham Siddharth · Accepted Answer

Part (1) is correct
Because its last orbital is half filled and half filled or fully
filled orbitals have high ionization energy

Among the following elements (Whose electronic configuration is given below) the one having the highest ionisation energy is (1) [Ne] 3s2 3p3 (2) [Ne] 3s2 3p4 (3) [Ne] 3s2 3p5 (4) [Ar] 3d10 4s2 4p2

Among the following elements (Whose electronic configuration is given below) the one having the highest ionisation energy is
(1) [Ne] 3s² 3p³ (2) [Ne] 3s² 3p⁴ (3) [Ne] 3s² 3p⁵ (4) [Ar] 3d¹⁰ 4s² 4p²