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Coordination Compounds

Short Answer Type

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81.
What is the significance of Δ₀?

Δ₀ is the energy-difference between the t_2g, and e set of d-orbitals and is called crystal field stabilisation energy in octahedral complex.
The Δ₀ relative values decides the actual configuration of the central metal atom/ion in the complex.

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82.

Write IUPAC name of the complex [Co(NH₃)₅SCN]Cl₂.

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83.

Give the name of following complex using IUPAC norms:
[Co(en)₂(ONO)Cl]Cl.

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84.

Give the IUPAC name of [NH₄]₃ [Co(ONO)₆].

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85.

Write the IUPAC name of [Ni(H₂O)₆] (ClO₄)₂.

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86.

Name the ionisation isomer of [Cr(H₂O)₅Br]SO₄.

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87. Square planar complexes with coordination number of 4 exhibit geometrical isomerism whereas tetrahedral complexes do not. Why?

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88.

Why does [CoF₆]^3– give a high spin complex?

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89. [Cu(CN)₄]²⁺ is more stable complex than [Cu(NH₃)₄]⁺. Why?

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90.

Square planar complexes do not show optical isomerism. Why?

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