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The pair in which both species have same...

The pair in which both species have same magnetic moment (spin only value ) is :

A

`[Cr(H_(2)O)_(6)]^(2+), [CoCl_(4)]^(2-)`

B

`[Cr(H_(2)O)_(6)]^(2+), [Fe(H_(2)O)_(6)]^(2+)`

C

`[Mn(H_(2)O)_(6)]^(2+), [Cr(H_(2)O)_(6)]^(2+)`

D

`[CoCl_(4)]^(2-),[Fe(H_(2)O)_(6)]^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
B
`(b) [Cr(H_(2)O)_(6)]^(2+) implies d^(4),[FeH_(2)O)_(6)]^(2+) implies d^(6).` Both have 4 unpaired electrons.
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OP TANDON-COORDINATION COMPOUNDS-E. Stability, Colour and Magnetic Properties of Complexes
  1. Among the following ions, which one has the highest paramagnetism ?

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  2. The pair in which both species have same magnetic moment (spin only va...

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  3. Which of the following complexes is diamagnetic ?

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  4. The number of unpaired electrons expected for the complex ion [Cr(NH(3...

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  5. You are given the following two complexes X and Y which are isomers of...

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  6. [Ni(CN)(4)]^(2-) and [NiCl(4)]^(2-) have similarity but not in :

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  7. Select the correct statement .

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  8. Amongst Ni(CO)(4), [Ni(CN)(4)]^(2-), NiCl(4)^(2-) :

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  9. In complexes more stability is shown by :

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  10. Give the correct order of stability is shown by : (P) [Al(H(2)O)(6)]...

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  11. Which of the following complexes is least likely to exist ?

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  12. For the reaction Ni^(2+)+4NH(3) to [Ni(NH(3))(4)]^(2+), at equilibrium...

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  13. An ion M^(2+) forms the complexes. [M(H(2)O)(6)]^(2+)" "[M(en)(3)]^(...

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  14. In the following complexes : (P) NiSO(4)+KCN(Xs) to complex 'I' (Q...

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  15. When hydrochloric acid is added to cobalt nitrate solution at room tem...

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  16. Of the following complex ions, the one that probably has the largest o...

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  17. The magnetic moment of a complex ion is 2.83 BM. The complex ion is :

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  18. Compound A gives blue colour solution with excess of NH(4)OH, it gives...

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  19. K(4)[Fe(CN)(6)] is slightly yellow coloured due to :

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  20. MnO(4)^(-) is of intense pink colour, though Mn is in (7+) oxidation s...

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