The outermost electronic configuration of the most… — JEE Main 1988 Chemistry PYQ

1988

The outermost electronic configuration of the most electronegative element is

A.
$ns^2 np^3$
B.
$ns^2 np^4$
C.
$ns^2 np^5$
D.
$ns^2 np^6$

Show answer and solution

Correct option: C

Solution

Fluorine (n=2) is the most electronegative element. Its electron configuration is 1s² 2s² 2p⁵, giving an outermost configuration of ns² np⁵. Fluorine's extreme electronegativity arises from its small atomic size and high nuclear charge, giving it the strongest pull on bonding electrons of any element.

[1988]

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JEE Main 1988 Chemistry question on Atomic Structure