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Atomic numbers of Cr and Fe are respecti...

Atomic numbers of `Cr` and `Fe` are respectively `24` and `26`. Which of the following is paramagnetic with the spin of the electron?

A

`[Cr(NH_(3))_(6)]^(+3)`

B

`[Fe(CO)_(5)]`

C

`[Fe(CN)_(6)]^(-4)`

D

`[Cr(CO)_(6)]`

Text Solution

Verified by Experts

The correct Answer is:
A
All metal carbonyls are diamagnetic cyanide complexes are also diamagnetic.
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Knowledge Check

  • Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagnetic with the spin of electron : -

    A
    `[Cr(CO)_6]`
    B
    `[Fe(CO)_5]`
    C
    `[Fe(CN)_6]^(-4)`
    D
    `[Cr(NH_3)_6]^(+3)`

  • Atomic numbers of Cr and Fe and 24 and 26 respectively, Which of the following is paramagnetic with the spin of electrons ?

    A
    `[Fe(CN)-6]^(4-)`
    B
    `[Cr(CO)_6]`
    C
    `[Cr(NH_3)_6]^(3+)`
    D
    `[Fe(CO)_5]`

  • The atomic number of V,Cr, Mn and Fe are respectively 23,24,25 and 26. Which one of these may be expected to have the highest second ionization enthalpy?

    A
    `Cr`
    B
    `Mn`
    C
    `Fe`
    D
    `V`

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    Atomic number of Mn, Fe, Co and Ni are 25, 26, 27 and 28 respectively. Which of the following outer orbital octahedral complexes have same number of unpaired electrons ?

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