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The complex which has no 'd' electrons i...

The complex which has no 'd' electrons in the central atom is (Atomic number, `Cr= 24, Mn = 25, Fe = 26, Co = 27)`

A

`[MnO_(4)]^(-)`

B

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

C

`[Fe(CN)_(6)]^(3-)`

D

`(Cr(H_(2)O)_(6)]^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
A
Oxidation number of Mn in `[MnO_(4)]^(-)`" is +7 which is achieved by the loss of all `3d^(5)` and `4s^(2)` electrons
Hence, (A) is the correct answer.
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FIITJEE-TRANSITION ELEMENTS & COORDINATION COMPOUNDS-SOLVED PROBLEMS (OBJECTIVE)
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  8. Spin only magnetic moment of the compound Hg(Co(SCN)(4)is

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  11. Identify the complexes which are expected to be coloured. Give explana...

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  15. The complex which has no 'd' electrons in the central atom is (Atomic ...

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  16. Which of the following cannot show linkage isomerism?

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  17. Among complexes [Fe(H(2)O)(6))]^(3+)", [Fe(CN)(6)]^(3-). [Fe(C(2)O(4))...

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  20. The complex showing a spin-only magnetic moment of 2,82 B.M. is

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