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Electronic configuration of a transition...

Electronic configuration of a transition element (X) in + 3 oxidation state is `[Ar]3d^(5)`. What is its atomic number -

A

25

B

26

C

27

D

24

Text Solution

Verified by Experts

The correct Answer is:
B
`x^(3+)` HAS THE ELECTRONIC CONFIGURATION `[Ar]3d^(5)`. So it has `18+5=23` electrons. Therefore, X - atom has `23+3=26` electrons , and hence, its atomic number is 26.
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Knowledge Check

  • Which of the following transition elements show +7 oxidation state ?

    A
    Cr
    B
    Mn
    C
    Fe
    D
    Ni

  • The general electronic configuration of third row transition elements is -

    A
    `3d^(1-10)4s^(1-10)`
    B
    `4d^(1-10)5s^(0-2)`
    C
    `5d^(1-10)6s^(1-2)`
    D
    `5d^(1-10)6s^(0-2)`

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