what is the hybridization of [Co(NH3)6]2+ & [Co(NH3)6]3+ & [Cu(NH3)4]+ ?

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Q. What is the hybridization of

{[C O (N H_{3})_{6}]}_{3}^{3 +}

Q. The complex ion

{[C o {(N H_{3})}_{6}]}_{6}^{+ 2}

is readily oxidized to

{[C o {(N H_{3})}_{6}]}_{6}^{+ 3} .

The colour of the coordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wavelength of light in the visible region, for the complexes, $[C o (N H_{3})_{6}]^{3 +}, [C o (C N)_{6}]^{3 -}, [C o (H_{2} O)_{6}]^{3 +}$
$[C o (N H_{3})_{6}]^{3 +}, [C o (C N)_{6}]^{3 -}, [C o (H_{2} O)_{6}]^{3 +}$
(a) $[C o (C N)_{6}]^{3 -} > [C o (N H_{3})_{6}]^{3 +} > [C o (H_{2} O)_{6}]^{3 +}$
(b) $[C o (N H_{3})_{6}]^{3 +} > [C o (H_{2} O)_{6}]^{3 +} > [C o (N H_{3})_{6}]^{3 +}$
(c) $[C o (H_{2} O)_{6}]^{3 +} > [C o (N H_{3})_{6}]^{3 +} > [C o (C N)_{6}]^{3 -}$
(d) $[C o (C N)_{6}]^{3 -} > [C o (N H_{3})_{6}]^{3 +} > [C o (H_{2} O)_{6}]^{3 +}$

Q. Which of the following can show coordination isomerism?
(i)

[C u {({N H}_{3})}_{4}] [P t {C l}_{4}]

(ii)

{[F e {({N H}_{3})}_{6}]}_{2} {[P t {(C N)}_{6}]}_{3}

(iii)

[C o {({N H}_{3})}_{6}] [C r {(C_{2} O_{4})}_{3}]

(iv)

[P t {(e n)}_{3}] {({S O}_{4})}_{2}

Q. Assertion :Complex ion

[C o (N H_{3})_{6}]^{2 +}

is readily oxidized to

[C o (N H_{3})_{6}]^{3 +}

Reason: Unpaired electron in complex ion

[C o (N H_{3})_{6}]^{2 +}

is present in 4p orbital.

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