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Which one of the following is an inner o...

Which one of the following is an inner orbital complex as well as diamagnetic in nature?

A

(a) `[Cr(NH_3)_6]^(3+)`

B

(b) `[Co(NH_3)_6]^(3+)`

C

(c) `[Ni(NH_3)_6]^(2+)`

D

(d) `[Zn(NH_3)_6]^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
B
In `[Zn(NH_3)_6]^(3+)`, `Zn` exists as `Zn^(2+) ._(30)Zn: 3d^(10), 4s^2`
`Zn^(2+): 3d^(10)`. Thus, no unpaired electron but it is outer orbital complex.
In `[Co(NH_3)_6]^(3+)`, Co exists as `Co^(3+)`
`._(27)Co:3d^7, 4s^2`
`Co^(3+): 3d^(6)`, It is `d^2 sp^3` inner orbital complex with no unpaired `e^(-)` in `3d` due to forced pairing.
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Which of the following is an inner orbital complex as well as diamagnetic in behaviour [Atomic numbers Zn = 30, Cr = 24, Co = 27, Ni = 28.]

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Knowledge Check

  • Which of the following is inner orbital complex as well as diamagnetic in nature ?

    A
    `[Ir(H_(2)O)_(6)]^(3+)`
    B
    `[Ni(NH_(3))_(6)]^(2+)`
    C
    `[Cr(NH_(3))_(6)]^(3+)`
    D
    `[Co(NH_(3))_(6)]^(2+)`

  • Which one of the following is an inner orbital complec as well as diamagnetic in behaviour?

    A
    `[Zn(NH_(3))_(6)]^(2+)`
    B
    `[Ni(NH_(3))_(6)]^(2+)`
    C
    `[Cr(NH_(3))_(6)]^(3+)`
    D
    `[Co(NH_(3))_(6)]^(3+)`

  • Which of the following in/are inner orbital complex(es) as well as diamagnetic in nature? [ Atomic Number : Cr=24, Mn=25, Fe=26, Co=27]

    A
    `[Zn(NH_(3))_(6)]^(2+)`
    B
    `[Ni(NH_(3))_(6)]^(2+)`
    C
    `[Cr(NH_(3))_(6)]^(3+)`
    D
    `[Co(NH_(3))_(6)]^(3+)`

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    Explore conceptually related problems

    Which of the following is/are inner orbital complex as well as dimagnetic in nature : [Atomic no. toCr=24, Mn=25, Fe=26, Co=27 ]

    Which of the following is/are inner orbital complex ?

    Which of the following is an outer orbital complex ?

    Which of the following is not an outer orbital complex ?

    Choose the correct option in which the following complex is an inner orbital complex as well as diamagnetic in behaviour?

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