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Standard XII

Chemistry

Crystal Field Split in Octahedral Complexes

The complex ...

Question

The complex ${[F e {(H_{2} O)}_{5} N O]}^{2 +}$ is formed in the brown ring test for nitrates when freshly prepared $F e {S O}_{4}$ solution is added to aqueous solution of ${N O}_{3}^{-}$ followed by addition of conc. $H_{2} {S O}_{4}$ . Select the correct statement about this complex.

Colour change is due to charge transfer

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It has iron in

+ 1

oxidation state and nitrosyl as

{N O}^{+}

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It has magnetic moment of

3.87 B M

confirming three unpaired electrons in

F e

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All the above are correct statements.

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Solution

The correct option is D All the above are correct statements.
Number of unpaired electron, $n = 3$
$∴$ Magnetic moment $μ = \sqrt{n (n + 2)} = \sqrt{3 (3 + 2)} = 3.87 B M$
thus, all the given options are correct.

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Similar questions

Q. The complex

[F e (H_{2} O)_{5} N O]^{2 +}

is formed in the brown ring test for nitrates when freshly prepared

F e S O_{4}

solution is added to aqueous solution of

N O_{3}^{-}

followed by addition of concentrated

H_{2} S O_{4}

. Select correct statements about this complex:

Q. The complex

{[F e {(H_{2} O)}_{5} N O]}^{2 +}

is formed in the ring-test for nitrate when freshly prepared

F e S O_{4}

solution is added to aqueous solution of

N O_{3}^{-}

followed by addition of conc.

H_{2} S O_{4}

. This complex is formed by charge transfer in which :

Q. The complex

[F e (H_{2} O)_{s} (N O)]^{2 +}

is formed in the ring test for nitrate when freshly prepared

F e S O_{4}

solution is added to aqueous solution of

N O_{3}^{-}

followed by addition of conc.

H_{2} S_{4}

. The complex is formed by charge transfer, which of the following change occurs?

Q. The complex

[F e (H_{2} O)_{3} N O]^{+}

is formed in the ring test for nitrate ion when freshly prepared

F e S O_{4}

solution is added to aqueous solution of

N O_{3}

followed by addition of

c o n c . H_{2} S O_{4}

: This complex is formed by charge transfer in which of the following:

[{F e (H_{2} O)}_{5} N o]^{2 +}

is formed as brown ring in

{N O}_{3}^{+}

test.

F e

in this complex has _________ unpaired electrons.

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The complex [Fe(H2O)5NO]2+ is formed in the brown ring test for nitrates when freshly prepared FeSO4 solution is added to aqueous solution of NO−3 followed by addition of conc. H2SO4. Select the correct statement about this complex.

The correct option is D All the above are correct statements.Number of unpaired electron, n=3∴ Magnetic moment μ=√n(n+2)=√3(3+2)=3.87BMthus, all the given options are correct.

The complex ${[F e {(H_{2} O)}_{5} N O]}^{2 +}$ is formed in the brown ring test for nitrates when freshly prepared $F e {S O}_{4}$ solution is added to aqueous solution of ${N O}_{3}^{-}$ followed by addition of conc. $H_{2} {S O}_{4}$ . Select the correct statement about this complex.

The correct option is D All the above are correct statements.
Number of unpaired electron, $n = 3$
$∴$ Magnetic moment $μ = \sqrt{n (n + 2)} = \sqrt{3 (3 + 2)} = 3.87 B M$
thus, all the given options are correct.