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Which of the following statement is not ...

Which of the following statement is not correct about the electronic configuration of chromium atom `(Cr` with atomic number `= 24)`?

A

It has five electrons in `3d` - sub -shell

B

It has one electrons in 4s-orbital

C

The principal quantum numbers of its valence electrons are 3 and 4

D

It has siz electrons in 3d -sub-shell

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Which of the following statements is not correct about the electronic configuration of gaseou chromium atom

    A
    It has 5 electrons in `3d` and one electron in `4s` orbitals
    B
    The principal quantum number of its valence electrons are `3` and `4`
    C
    It has 6 electrons in `3d` orbital
    D
    Its valance electrons have quantum number `'I'` 0 and 2

  • 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 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)`

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