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JEE Advanced > Coordination Compounds

Explore popular questions from Coordination Compounds for JEE Advanced. This collection covers Coordination Compounds previous year JEE Advanced questions hand picked by experienced teachers.

Q 1.

Correct4

Incorrect-1

What type of isomerism is present in the pair of complexes {tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 5 } \mathrm { Br } \right] \mathrm { SO } _ { 4 } {/tex} and {tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 5 } \mathrm { SO } _ { 4 } \right] \mathrm { Br } {/tex}

A

Linkage isomerism

B

Ligand isomerism

Ionisation isomerism

D

Coordination isomerism

Q 2.

Correct4

Incorrect-1

Test tube {tex} \mathrm {I} {/tex} contains (aq) {tex} \mathrm {KI} {/tex}, {tex} \mathrm {II} {/tex} contains (aq) {tex} \mathrm {HgCl}_{2}{/tex}, {tex} \mathrm {III} {/tex} contains mixture of {tex} \mathrm {II} {/tex} and {tex} \mathrm {II} {/tex} in {tex} \mathrm {4:1} {/tex} ratio, Select the correct statement

A

{tex} \mathrm {I} {/tex} and {tex} \mathrm {III} {/tex} give test for {tex} \mathrm I ^ { - } {/tex} and {tex} \mathrm K ^ { + } {/tex}

B

{tex} \mathrm {II} {/tex} and {tex} \mathrm {III} {/tex} both give test for {tex} \mathrm { Hg } ^ { 2 + } {/tex}

C

Both (a) and (b) are correct

None of the above is correct

Explanation

Q 3.

Correct4

Incorrect-1

The number of unpaired electrons expected for the complex ion {tex} \left[ \mathrm { Cr } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { 2+ } {/tex}

2

B

3

C

4

D

5

Explanation

Q 4.

Correct4

Incorrect-1

Isomerisms exhibited by {tex} \left[ \mathrm { Cr } \left( \mathrm { NH } _ { 3 } \right) _ { 2 } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 2 } \mathrm { Cl } _ { 2 } \right] ^ { + } {/tex} are

A

Ionisation, optical

B

Hydrate, optical

Eometrical, optical

D

Coordinate, geometrical

Explanation

Q 5.

Correct4

Incorrect-1

The complex showing a spin-only magnetic moment of {tex} 2.82 \mathrm { BM } {/tex} is

A

{tex} \mathrm { Ni } ( \mathrm { Cl } ) _ { 4 } {/tex}

{tex} \left[ \mathrm { NiCl } _ { 4 } \right] ^ { 2 - } {/tex}

C

{tex} \mathrm { Ni } \left( \mathrm { PPh } _ { 3 } \right) _ { 4 } {/tex}

D

{tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] ^ { 2 - } {/tex}

Q 6.

Correct4

Incorrect-1

Consider the following complex, ions, {tex} P , Q {/tex} and {tex} R P = \left[ \mathrm { FeF } _ { 6 } \right] ^ { 3 - } , Q = \left[ V \left( H _ { 2 } O \right) _ { 6 } \right] ^ { 2 + } {/tex} and {tex} R = \left[ \mathrm { Fe } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { 2+ } {/tex} The correct order of the complex ions, according to their spin-only magnetic moment values (in BM) is

A

{tex} R < Q < P {/tex}

{tex} Q < R < P {/tex}

C

{tex} R < P < Q {/tex}

D

{tex} Q < P < R {/tex}

Q 7.

Correct4

Incorrect-1

Consider the following statements in respect of {tex} \left[ \mathrm { CoCl } _ { 6 } \right] ^ { 4 - } {/tex} complex ion
I. It is paramagnate
II. It is low-spin complex
III. Oxidation number of cobalt is {tex} - 4 {/tex}
IV. The coordination number of cobalt is {tex}6{/tex}
Select the correct statement

A

All of the above

B

III and IV only

I and IV only

D

I and II only

Explanation

Q 8.

Correct4

Incorrect-1

{tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] ^ { 2 - } {/tex}and {tex} \left[ \mathrm { Ni } ( \mathrm { CO } ) _ { 4 } \right] {/tex} have

A

{tex} \mathrm{s p} ^ { 3 } {/tex} hybridised {tex} \mathrm { Ni }{/tex} in both cases

B

{tex} \mathrm {s p} ^ { 3 } {/tex} and {tex} \mathrm{s p} ^ { 2 } \mathrm d {/tex} hybridised {tex} \mathrm { Ni }{/tex}

{tex} \mathrm {d s p} ^ { 2 } {/tex} and {tex} \mathrm {s p} ^ { 3 } {/tex} hybridised \mathrm

D

{tex} \mathrm {d s p} ^ { 2 } {/tex} in both cases

Explanation

Q 9.

Correct4

Incorrect-1

Consider the following complexes:
{tex} \mathrm { I }. \ \mathrm { K } _ { 2 } \mathrm { PtCl } _ { 6 } {/tex}
{tex}\mathrm { II}. \ \mathrm{PtCl } _ { 4 } \cdot 2 \mathrm { NH } _ { 3 } {/tex}
{tex}\mathrm { III }.\ \mathrm { Pt } _ { 4 } \cdot 3 \mathrm { NH } _ { 3 } {/tex}
{tex}\mathrm { IV }.\ \mathrm { PtCl } _ { 4 } \cdot 5 \mathrm { NH } _ { 3 } {/tex}
Their electrical conductances in aqueous solutions are

{tex} 256,0,97,404 {/tex}

B

{tex} 404,0,97,256 {/tex}

C

{tex} 256,97,0,404 {/tex}

D

{tex} 404,97,256,0 {/tex}

Explanation

Q 10.

Correct4

Incorrect-1

Which of the following complex species is not expected to exhibit optical isomerism?

A

{tex} \left[ \mathrm { Co } ( \mathrm { en } ) _ { 3 } \right] ^ { 3 + } {/tex}

{tex} \left[ \mathrm { Co } ( \mathrm { en } ) _ { 2 } \mathrm { Cl } _ { 2 } \right] ^ { + } {/tex}

C

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 3 } \mathrm { Cl } _ { 3 } \right] {/tex}

D

{tex} \left[ \mathrm { Co } ( \mathrm { en } ) \left( \mathrm { NH } _ { 3 } \right) \mathrm { Cl } _ { 2 } \right] ^ { + } {/tex}

Explanation

Q 11.

Correct4

Incorrect-1

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 5 } \left( \mathrm { NO } _ { 2 } \right) \right] ^ { 2 + } \operatorname { and } \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 5 } ( \mathrm { ONO } ) \right] ^ { 2 + } {/tex} will differ in

Colour

B

Structure

C

Hybridisation

D

magnetic moment

Explanation

Q 12.

Correct4

Incorrect-1

Potassium diamminedicyanosulphatosuperoxo palatinate (IV) is

{tex} \mathrm { K } \left[ \mathrm { Pt } ( \mathrm { CN } ) _ { 2 } \left( \mathrm { O } _ { 2 } \right) \left( \mathrm { SO } _ { 4 } \right) \left( \mathrm { NH } _ { 3 } \right) _ { 2 } \right] {/tex}

B

{tex} \mathrm { K } _ { 4 } \left[ \mathrm { Pt } \left( \mathrm { NH } _ { 3 } \right) _ { 2 } ( \mathrm { CN } ) _ { 2 } \left( \mathrm { SO } _ { 4 } \right) \left( \mathrm { O } _ { 2 } \right) \right] {/tex}

C

{tex} \mathrm { K } _ { 2 } \left[ \mathrm { Pt } \left( \mathrm { NH } _ { 3 } \right) _ { 2 } ( \mathrm { CN } ) _ { 2 } \left( \mathrm { SO } _ { 4 } \left( \mathrm { O } _ { 2 } \right) \right] \right. {/tex}

D

{tex} \mathrm { K } _ { 3 } \left[ \mathrm { Pt } \left( \mathrm { NH } _ { 3 } \right) _ { 2 } ( \mathrm { CN } ) _ { 2 } \left( \mathrm { SO } _ { 4 } \right) \left( \mathrm { O } _ { 2 } \right) \right] {/tex}

Explanation

Q 13.

Correct4

Incorrect-1

Select the correct statement

A

Complex ion {tex} \left[ \mathrm { MoCl } _ { 6 } \right] ^ { 3 - } {/tex} is paramagnetic

B

Complex ion {tex} \left[ \mathrm { Co } ( \mathrm { en } ) _ { 3 } \right] ^ { 3 + } {/tex} is diamagnetic

Both (a) and (b) are correct

D

None of the above is correct

Explanation

Q 14.

Correct4

Incorrect-1

In the ring compounds formed by bidentate ligands, on binding to a metal or metal ions, are called

A

Ligands

Chelates

C

Complexes

D

Ambident

Q 15.

Correct3

Incorrect-1

Generally, a group of atoms can function as a ligand if

A

They are free radicals

They are either neutral molecules or negatively charged ions

C

They are positively charged ions

D

None of the above

Explanation