Question

E.C (electronic configuration) of Copper
I'm confused, whether it is [Ar]3d10,4s1 or [Ar]4s2,3d9
Can someone explain me how....
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Answer 1

$\sf\underline{Copper's~electronic~configuration:}$

The correct electronic configuration of copper is [Ar]3d10,4s1

It is because elements with half filled or full filled orbital have greater stability. Copper would have greater stability by transferring one electron from 4s to 3d. Because 3d orbital will be fulfilled and 4s will be half-filled, Copper will have greater stability

Refer to the image to understand the distribution

Answer 2

Answer:

Copper

′

s electronic configuration:

The correct electronic configuration of copper is [Ar]3d10,4s1

It is because elements with half filled or full filled orbital have greater stability. Copper would have greater stability by transferring one electron from 4s to 3d. Because 3d orbital will be fulfilled and 4s will be half-filled, Copper will have greater stability

Refer to the image to understand the distribution