The electronic configuration of valence shell of Cu is 3d104s1 and not 3d94s2 . How is this configuration explained?

The electronic configuration of valence shell of Cu is 3d¹⁰4s¹ and not 3d⁹4s² . How is this configuration explained?

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Vishal Baghel | Contributor-Level 10

9 months ago

This is a Short Answer Type Questions as classified in NCERT Exemplar

Ans: As per the Hund's rule the half filled and fully filled orbital leads to the extra stability due to the symmetry thus fully filled 3d and half filled 4s is preferred.

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Vishal Baghel

Kindly go through the answers

(7.00)

Consider the following reaction:
(A substituted phenol reacts with H? and CrO?Cl to produce product 'P'.)
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Kindly consider the following Image

The number of radial land angular nodes in 4d orbital are, respectively

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Chemistry NCERT Exemplar Solutions Class 11th Chapter Two 2025

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