Q.

Which pair(s) of atoms or ions will NOT have same electronic configuration?

Moderate

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An Intiative by Sri Chaitanya

F and Ne

Li⊕ and He+

Na and K

Cl⊖ and Ar

answer is A.

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Detailed Solution

Cl=3s23p5,Cl⊖=3s23p6,Ar=3s23p6

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