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Write the electronic configuration of so...

Write the electronic configuration of sodium atom (Atomic number of sodium = 11)

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The atomic number of sodium is 11. This means that a normal sodium atom contains 11 electrons. Out of 11 electrons of sodium atom, the first 2 electrons will occupy K shell, the next 8 electrons will occupy L shell and the remaining 1 electron will go to M shell. So, the electronic configuration of sodium atom will be :
`underset("2, 8, 1")("K L M")or 2,8,1`.
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Knowledge Check

  • the electronic configuration of gadolinium (atomic number 64) is

    A
    `[Xe]4f^35d^56s^2`
    B
    `[xe]4f^75d^26s^1`
    C
    `[Xe]4f^75d^16s^2`
    D
    `[Xe]4f^85d^86s^2`

  • The electronic configuration of Ag atom is

    A
    `[Kr]3d^(10)4s^(1)`
    B
    `[Xe]4f^(14)d^(10)6s^(1)`
    C
    `[Kr]4d^(10)5s^(1)`
    D
    `[Kr]4d^(9)5s^(2)`

  • Electronic configuration of deuterium atom is

    A
    `1s^1`
    B
    `2s^2`
    C
    `2s^1`
    D
    `1s^2`

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