(i) What type of isomerism is shown by the complex `[Cr(H_(2)O)_(6)]Cl_(3)`? (ii) On the basis of crystal field theory, write the electronic configuration for `d^(4)` ion if `Delta_(0)gtP.` (iii) Write the hybridization and shape of `[CoF_(6)]^(3-)`. (Atomic number of Co=27)

(i) What type of isomerism is shown by the complex `[Cr(H_(2)O)_(6)]Cl

1.	(i) What type of isomerism is shown by the complex `[Cr(H_(2)O)_(6)]Cl_(3)`? (ii) On the basis of crystal field theory, write the electronic configuration for `d^(4)` ion if `Delta_(0)gtP.` (iii) Write the hybridization and shape of `[CoF_(6)]^(3-)`. (Atomic number of Co=27)
Answer» (i) Solvate Isomerism. (ii) `[Cr(H_(2)O)_(6)]Cl_(3)` Violet `[Cr(H_(2)O)_(5)Cl]Cl_(2)-H_(2)O` (Blue green) `[Cr(H_(2)O)_(4)Cl_(2)]Cl. 2H_(2)O` Dark green (iii) `[CoF_(6)]^(3-)` is an outer orbital or high spin complex involving `Sp^(3)d^(2)` hybridisation and octahedrol shape.

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
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(i) What type of isomerism is shown by the complex `[Cr(H_(2)O)_(6)]Cl_(3)`? (ii) On the basis of crystal field theory, write the electronic configuration for `d^(4)` ion if `Delta_(0)gtP.` (iii) Write the hybridization and shape of `[CoF_(6)]^(3-)`. (Atomic number of Co=27)

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