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The correct ground state electronic conf...

The correct ground state electronic configuration of chromium atom is :

A

`[Ar]3d^(5)4s^(1)`

B

`[Ar]3d^(4)4s^(2)`

C

`[Ar]3d^(6)4s^(0)`

D

`[Ar]4d^(5)4s^(1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Cr(24)=ubrace(1s^(2)2s^(2)2p^(6)3s^(2)3p^(6))3d^(5)4s^(1)`, The above configuration is exception to Aufbau’s principle.
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Knowledge Check

  • The correct ground state electronic configuration of chromium atom(Z=24) is :

    A
    `[Ar]4d^(5)4s^(1)`
    B
    `[Ar]3d^(4)4s^(2)`
    C
    `[Ar]3d^(6)4s^(0)`
    D
    `[Ar]3d^(5) 4s^(1)`

  • The correct state electronic configuration of chromium atom is

    A
    `[Ar]3d^(5)4s^(1)`
    B
    `[Ar]3d^(4)4s^(2)`
    C
    `[Ar]3d^(6)4s^(0)`
    D
    `[Ar]3d^(5)4s^(1)`

  • The ground state electronic configuration of chromium is against

    A
    Hund's rule
    B
    Pauli's principle
    C
    Auf-bau principle
    D
    Boyle principle

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