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how many uppaired electrons are pres...

how many uppaired electrons are present in the central metal ion of ` [Co Cl_(4) ]^(2-)?`

A

3

B

4

C

5

D

2

Text Solution

Verified by Experts

The correct Answer is:
A
`"in" [CoCl_(4) ]^(2-)` ion central metal atom , i.e, cobalt is in + 2 oxidation state .
Hence ,`""_(27)Co=[Ar]3d^(7)4S^(2)`

Hence number ofunpaired electrons is three as `Cl^(-)` is a weak field ligand .
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-COORDINATION COMPOUNDS-Exercise 1
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  2. The number of unpaired electrons in Ni (CO)(4) is

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  3. how many uppaired electrons are present in the central metal io...

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  4. Crystal field stabilization energy for high spin d^4 octahedral comple...

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  5. Magnetic moments 2.84 B.M is given by : (At. nos. ni = 28, Ti = 22, ...

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  6. [NiCl(4)]^(2-) is paramagnetic while [Ni(CO)(4)] is diamagnetic though...

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  7. The correct relationship between Delta (t) and Delta (0) is expr...

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  8. [Sc(H(2)O)(6)]^(3+) ion is

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  9. Excited state configuration of Mn^(2+) is

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  10. Considering H2O as a weak field ligand, the number of unpaired electro...

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  11. Of the following complex ions, which is diamagnetic in natures?

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  12. An octahedral complex is formed when hybrid orbitals of the following ...

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  13. High spin complex [FeCI(6)]^(3-) has th d-configuration

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  14. The correct statement with respect to the complexes Ni(CO)(4) and |Ni(...

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  15. [Fe(H(2)O)(6)]^(2+) and [Fe(CN)(6)]^(4-)differ in :

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  16. What is true about [Mn Cl(6) ]^(3-) , [FeF(6)]^(3-) and [CoF(6)]...

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  17. Which of these statements about [Co(CN)6]^(3-) is true?

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  18. One mole of the complex CoCl(3) . 6 H(2) O on reaction with e...

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  19. Paramagnetic octahedral complex, [CoF(6)]^(3-) uses outer orbital...

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  20. Cobalt (III) chloride forms several octahedral complexes with amonia. ...

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