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Why are low spin tetrahedral complexes n...

Why are low spin tetrahedral complexes not formed ?

A

For tetrahedral complexes, the CFSE is lower than pairing energy

B

For tetrahedral complexes, the CFSE is higher than pairing energy.

C

Electrons do not to in case of tetrahedral complexes

D

Tetrahedral complexes are formned by weak field ligands only

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Verified by Experts

The correct Answer is:
A
In tetrahedral complexes repulsions are due to 4 ligands only, the repulsion are not head to head repulsions.
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(a) What type of isomerism is shown by the complex [Co(NH_(3))_(5)(SCN)]^(2+) ? (b) why is [NiCl_(4)]^(2-) paramagnetic while [Ni(CN)_(4)]^(2-) is diamagnetic ? (Atomic number of Ni=28) (c) Why are low spin tetrahedral complexes rarely observed?

The tetrahedral complexes are

Nearly all tetrahedral complexes are

Tetrahedral complexes are generally favoured :

Assertion (A) : Low spin tetrahedral complexes are rarely observed. Reason (R) : Crystal field splitting is less than pairing energy for tetrahedral complexes.

NARAYNA-CO-ORDINATE COMPOUNDS -Exercise-4
  1. Complex compound is made up of

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  2. When degenerate d-orbitals of an isolated atom/ion come under influenc...

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  3. The reducing power of the metal decreases in the order:

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  4. Which of these species has same number of unpaired electrons with weak...

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  5. Why are low spin tetrahedral complexes not formed ?

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  6. Value of CFSE, in tetrahedral complex having 3d^4 configuration of met...

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  7. The non -existant metal carbonyl among the following is

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  8. The pi - bounded organometallic compound which has ethylene as one of ...

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  9. If X' is a Anti cancerous drug which of the following conversions will...

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  10. Which of the following configuration will not give John- teller distor...

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  11. Which of the following does not have a metal carbon bond?

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  12. Fe(4)[Fe(CN)(6)](3) a blue coloured complex. Average oxidation number ...

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  13. Magnetic moment (spin only) of octahedron complex having SFSE=-0.8Delt...

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  14. Given that maximum absorption for d-d transition in [Ti(H2O)(6)]^(3+) ...

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  15. The CFSE for octahedral [CoCl(6)]^(4-) is 18,000 cm^(-1). The CFSE for...

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  16. Which of the following ion does not exist

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  17. Low spin complex of d^6-cation in an octahedral field will have the fo...

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  18. Which of the following complex (Werner presentation) have minimum elec...

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  19. Which of the following octahedral complexes shown geometrical as well ...

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  20. The coordination number of Fe in [Fe(eta^(5)-C(5)H(5))(2)] is 2x . The...

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