. Which is correct about ionization potential


Which is correct about ionization potential:

(A) (IP)1 of N > (IP)1 of O   

(B)  (IP)2 of N > (IP)2 of O

(C) (IP)of Li > (IP)2 of Ne 

(D) (IP)1 of Al > (IP)of Ca

Best Answer

Correct Option is -

(A, C)

(IP1) of N > (IP1) of O

Configuration of N (7) = 1s22s2 2p3

Configuration of O (8) = 1s22s22p4

N is half filled that’s why it requires

comparative high energy to remove

electron from it orbit than O.

(IP)2 Li > (IP)2 of Ne

(IP)2 means second ionisation

potential

Configuration of Li+ = 1s2

Configuration of Ne+ = 1s22s22p5

Li+ is fully filled.

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