Question

explain Cr and Cu have extra stability

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Answer 1

$\huge\red{Answer}$

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☆☞ [ Verified answer ]☜☆

A sublevel which is exactly half filled is more stable than a ... come up with to try to explain and predict their behavior.

jai siya ram☺ __/\__

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¯\_(ツ)_/¯

Answer 2

$\huge\boxed{\fcolorbox{black}{pink}{Answer}}$

Changing in its normal configuration, Cr and Cu acquires half-filled and fully filled configurations which gives them extra stability. Hence they show exceptional configuration.

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