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Nomenclature of Coordination Compounds

For the compl...

Question

For the complex ion $[F e (C N)_{6}]^{3 -}$ state:
(i) The geometry of the ion.
(ii) The magnetic property of the ion

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Solution

(i) The complex ion $[F e (C N)_{6}]^{3 -}$ has octahedral geometry.
The central Fe atom has six bond pairs of electrons.
(ii) It is paramagnetic due to presence of 1 unpaired electron.
$F e^{3 +}$ ion has outer electronic configuration of $3 d^{5}$ . Cyanide ion is strong field ligand and causes spin pairing.

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Q. For the complex ion

[F e (C N)_{6}]^{3 -}

, state:
(i) the type of hybridisation.
(ii) the magnetic behaviour.
(iii) the oxidation number of the central metal atom.

Q. The magnetic moment of

[M n X_{4}]^{2 -}

5.9 B M

. The geometry of the complex ion is : (

X =

monodentate halide ion).

Q. With the help of Valence bond theory account for hybridisation, geometry and magnetic property of

[N i (C N)_{4}]^{2 -}

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Q. For the coordination complex ion

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

(i) Give the IUPAC name of the complex ion.
(ii) What is the oxidation number of cobalt in the complex ion?
(iii) State the type of hybridisation of the complex ion.
(iv) State the magnetic behaviour of the complex ion.

Q. State the hybridization and magnetic property of

{[F e {(C N)}_{6}]}^{3 -}

ion according to the valence bond theory.

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