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The chemical species having same number ...

The chemical species having same number of electrons in the outermost and penultimate shell is

A

`O^(2-)`

B

`Na^+`

C

`Cl^-`

D

`Al^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
C
Configuration of `Cl^-` ion is `1s^2 2s^2 2p^6 3s^2 3p`
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Knowledge Check

  • The chalcogen having same number of electrons both in penultimate and antipenultimate shells is

    A
    O
    B
    S
    C
    Se
    D
    Te

  • The chalcogen having same number of electrons both in penultimate and antipenultimate shells is

    A
    O
    B
    S
    C
    Se
    D
    Te

  • Which among the following species have the same number of electrons in its outermost as well as penultimate shell

    A
    `Mg^(2+)`
    B
    `O^(2-)`
    C
    `F^-`
    D
    `Ca^(2+)`

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