Which rule explains the electronic configuration of chromium is [Ar] $3 d^{5} 4 s^{1}$ instead of [Ar] $3 d^{4} 4 s^{2}$ ?

Pauli's exclusion principle

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Aufbau Principle

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Hund's rule

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Heisenberg principle

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Solution

The correct option is C Hund's rule
According to Hund's rule, first we fill single electron in every orbit of a subshell then we go for next ,here all the D orbit get filled by single electron that show it follow the Hund's rule.

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Similar questions

C r

[A r]

3 d^{5}

4 s^{1}

[A r]

3 d^{4}

4 s^{2}

Which electronic configuration violate the Pauli's exclusion principle?

3 d^{5} 4 s^{1}

3 d^{4} 4 s^{2}

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