What is the significance of Δ0? from Chemistry Coordin
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    Coordination Compounds

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    81.

    What is the significance of Δ0?

    Δ0 is the energy-difference between the t2g, 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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