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CHXII09:COORDINATION COMPOUNDS

321965 Which one of the following has an optical isomer? (en = ethylenediamine)

1

{[Zn (en)_{2}]}^{2 +}

2

{[Co {(H_{2} O)}_{4} (en)]}^{3 +}

3

{[Zn (en) {({NH}_{3})}_{2}]}^{2 +}

4

{[Co (en)_{3}]}^{3 +}

Explanation:

Complex ${[Co (en)_{3}]}^{3 +}$ has no plane of symmetry and centre of symmetry. That's why, it is optically active.
supporting img

CHXII09:COORDINATION COMPOUNDS

321966 Which of the following will exhibit optical isomerism?

1

{[Cr (en) {(H_{2} O)}_{4}]}^{3 +}

2

{[Cr (en)_{3}]}^{3 +}

3 trans-

{[Cr (en) ({Cl}_{2}) {({NH}_{3})}_{2}]}^{+}

4

{[Cr {({NH}_{3})}_{6}]}^{3 +}

Explanation:

$M (AA)_{3}$ shows optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321967 Chiral complex from the following is
(Here, en $=$ ethylene diamine)

1 cis -

[{PtCl}_{2} {({NH}_{3})}_{2}]

2 trans

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

3 trans -

{[Co {({NH}_{3})}_{4} {Cl}_{2}]}^{+}

4 cis

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

Explanation:

The chiral complex is cis $-$ ${[{PtCl}_{2} (en)_{2}]}^{2 +}$ as there is no element of symmetry.
supporting img

JEE - 2023

CHXII09:COORDINATION COMPOUNDS

321968 Which of the following complex species is not expected to exhibit optical isomerism?

1

{[Co (en) {({NH}_{3})}_{2} {Cl}_{2}]}^{+}

2

[Co {({NH}_{3})}_{3} {Cl}_{3}]

3

{[Co (en)_{3} {Cl}_{2}]}^{+}

4

{[Co (en)_{2} {Cl}_{2}]}^{+}

Explanation:

Optical isomerism is exhibited by only those complexes which lack elements of symmetry.
$[Co {({NH}_{3})}_{3} {Cl}_{3}]$ shows facial as well as meridional isomerism.
But the forms contain plane of symmetry. Thus, this complex does not exhibit optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321969 Which of the following will give a pair of enantiomers?

1

[Pt {({NH}_{3})}_{4} {Cl}_{2}]

2

[Co {({NH}_{3})}_{4} {Cl}_{2}] {NO}_{2}

3

[Cr {({NH}_{3})}_{6}] [Co (CN)_{6}]

4

[Co (en)_{2} {Cl}_{2}] Cl

CHXII09:COORDINATION COMPOUNDS

321965 Which one of the following has an optical isomer? (en = ethylenediamine)

1

{[Zn (en)_{2}]}^{2 +}

2

{[Co {(H_{2} O)}_{4} (en)]}^{3 +}

3

{[Zn (en) {({NH}_{3})}_{2}]}^{2 +}

4

{[Co (en)_{3}]}^{3 +}

Explanation:

Complex ${[Co (en)_{3}]}^{3 +}$ has no plane of symmetry and centre of symmetry. That's why, it is optically active.
supporting img

CHXII09:COORDINATION COMPOUNDS

321966 Which of the following will exhibit optical isomerism?

1

{[Cr (en) {(H_{2} O)}_{4}]}^{3 +}

2

{[Cr (en)_{3}]}^{3 +}

3 trans-

{[Cr (en) ({Cl}_{2}) {({NH}_{3})}_{2}]}^{+}

4

{[Cr {({NH}_{3})}_{6}]}^{3 +}

Explanation:

$M (AA)_{3}$ shows optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321967 Chiral complex from the following is
(Here, en $=$ ethylene diamine)

1 cis -

[{PtCl}_{2} {({NH}_{3})}_{2}]

2 trans

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

3 trans -

{[Co {({NH}_{3})}_{4} {Cl}_{2}]}^{+}

4 cis

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

Explanation:

The chiral complex is cis $-$ ${[{PtCl}_{2} (en)_{2}]}^{2 +}$ as there is no element of symmetry.
supporting img

JEE - 2023

CHXII09:COORDINATION COMPOUNDS

321968 Which of the following complex species is not expected to exhibit optical isomerism?

1

{[Co (en) {({NH}_{3})}_{2} {Cl}_{2}]}^{+}

2

[Co {({NH}_{3})}_{3} {Cl}_{3}]

3

{[Co (en)_{3} {Cl}_{2}]}^{+}

4

{[Co (en)_{2} {Cl}_{2}]}^{+}

Explanation:

Optical isomerism is exhibited by only those complexes which lack elements of symmetry.
$[Co {({NH}_{3})}_{3} {Cl}_{3}]$ shows facial as well as meridional isomerism.
But the forms contain plane of symmetry. Thus, this complex does not exhibit optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321969 Which of the following will give a pair of enantiomers?

1

[Pt {({NH}_{3})}_{4} {Cl}_{2}]

2

[Co {({NH}_{3})}_{4} {Cl}_{2}] {NO}_{2}

3

[Cr {({NH}_{3})}_{6}] [Co (CN)_{6}]

4

[Co (en)_{2} {Cl}_{2}] Cl

CHXII09:COORDINATION COMPOUNDS

321965 Which one of the following has an optical isomer? (en = ethylenediamine)

1

{[Zn (en)_{2}]}^{2 +}

2

{[Co {(H_{2} O)}_{4} (en)]}^{3 +}

3

{[Zn (en) {({NH}_{3})}_{2}]}^{2 +}

4

{[Co (en)_{3}]}^{3 +}

Explanation:

Complex ${[Co (en)_{3}]}^{3 +}$ has no plane of symmetry and centre of symmetry. That's why, it is optically active.
supporting img

CHXII09:COORDINATION COMPOUNDS

321966 Which of the following will exhibit optical isomerism?

1

{[Cr (en) {(H_{2} O)}_{4}]}^{3 +}

2

{[Cr (en)_{3}]}^{3 +}

3 trans-

{[Cr (en) ({Cl}_{2}) {({NH}_{3})}_{2}]}^{+}

4

{[Cr {({NH}_{3})}_{6}]}^{3 +}

Explanation:

$M (AA)_{3}$ shows optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321967 Chiral complex from the following is
(Here, en $=$ ethylene diamine)

1 cis -

[{PtCl}_{2} {({NH}_{3})}_{2}]

2 trans

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

3 trans -

{[Co {({NH}_{3})}_{4} {Cl}_{2}]}^{+}

4 cis

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

Explanation:

The chiral complex is cis $-$ ${[{PtCl}_{2} (en)_{2}]}^{2 +}$ as there is no element of symmetry.
supporting img

JEE - 2023

CHXII09:COORDINATION COMPOUNDS

321968 Which of the following complex species is not expected to exhibit optical isomerism?

1

{[Co (en) {({NH}_{3})}_{2} {Cl}_{2}]}^{+}

2

[Co {({NH}_{3})}_{3} {Cl}_{3}]

3

{[Co (en)_{3} {Cl}_{2}]}^{+}

4

{[Co (en)_{2} {Cl}_{2}]}^{+}

Explanation:

Optical isomerism is exhibited by only those complexes which lack elements of symmetry.
$[Co {({NH}_{3})}_{3} {Cl}_{3}]$ shows facial as well as meridional isomerism.
But the forms contain plane of symmetry. Thus, this complex does not exhibit optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321969 Which of the following will give a pair of enantiomers?

1

[Pt {({NH}_{3})}_{4} {Cl}_{2}]

2

[Co {({NH}_{3})}_{4} {Cl}_{2}] {NO}_{2}

3

[Cr {({NH}_{3})}_{6}] [Co (CN)_{6}]

4

[Co (en)_{2} {Cl}_{2}] Cl

CHXII09:COORDINATION COMPOUNDS

321965 Which one of the following has an optical isomer? (en = ethylenediamine)

1

{[Zn (en)_{2}]}^{2 +}

2

{[Co {(H_{2} O)}_{4} (en)]}^{3 +}

3

{[Zn (en) {({NH}_{3})}_{2}]}^{2 +}

4

{[Co (en)_{3}]}^{3 +}

Explanation:

Complex ${[Co (en)_{3}]}^{3 +}$ has no plane of symmetry and centre of symmetry. That's why, it is optically active.
supporting img

CHXII09:COORDINATION COMPOUNDS

321966 Which of the following will exhibit optical isomerism?

1

{[Cr (en) {(H_{2} O)}_{4}]}^{3 +}

2

{[Cr (en)_{3}]}^{3 +}

3 trans-

{[Cr (en) ({Cl}_{2}) {({NH}_{3})}_{2}]}^{+}

4

{[Cr {({NH}_{3})}_{6}]}^{3 +}

Explanation:

$M (AA)_{3}$ shows optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321967 Chiral complex from the following is
(Here, en $=$ ethylene diamine)

1 cis -

[{PtCl}_{2} {({NH}_{3})}_{2}]

2 trans

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

3 trans -

{[Co {({NH}_{3})}_{4} {Cl}_{2}]}^{+}

4 cis

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

Explanation:

The chiral complex is cis $-$ ${[{PtCl}_{2} (en)_{2}]}^{2 +}$ as there is no element of symmetry.
supporting img

JEE - 2023

CHXII09:COORDINATION COMPOUNDS

321968 Which of the following complex species is not expected to exhibit optical isomerism?

1

{[Co (en) {({NH}_{3})}_{2} {Cl}_{2}]}^{+}

2

[Co {({NH}_{3})}_{3} {Cl}_{3}]

3

{[Co (en)_{3} {Cl}_{2}]}^{+}

4

{[Co (en)_{2} {Cl}_{2}]}^{+}

Explanation:

Optical isomerism is exhibited by only those complexes which lack elements of symmetry.
$[Co {({NH}_{3})}_{3} {Cl}_{3}]$ shows facial as well as meridional isomerism.
But the forms contain plane of symmetry. Thus, this complex does not exhibit optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321969 Which of the following will give a pair of enantiomers?

1

[Pt {({NH}_{3})}_{4} {Cl}_{2}]

2

[Co {({NH}_{3})}_{4} {Cl}_{2}] {NO}_{2}

3

[Cr {({NH}_{3})}_{6}] [Co (CN)_{6}]

4

[Co (en)_{2} {Cl}_{2}] Cl

CHXII09:COORDINATION COMPOUNDS

321965 Which one of the following has an optical isomer? (en = ethylenediamine)

1

{[Zn (en)_{2}]}^{2 +}

2

{[Co {(H_{2} O)}_{4} (en)]}^{3 +}

3

{[Zn (en) {({NH}_{3})}_{2}]}^{2 +}

4

{[Co (en)_{3}]}^{3 +}

Explanation:

Complex ${[Co (en)_{3}]}^{3 +}$ has no plane of symmetry and centre of symmetry. That's why, it is optically active.
supporting img

CHXII09:COORDINATION COMPOUNDS

321966 Which of the following will exhibit optical isomerism?

1

{[Cr (en) {(H_{2} O)}_{4}]}^{3 +}

2

{[Cr (en)_{3}]}^{3 +}

3 trans-

{[Cr (en) ({Cl}_{2}) {({NH}_{3})}_{2}]}^{+}

4

{[Cr {({NH}_{3})}_{6}]}^{3 +}

Explanation:

$M (AA)_{3}$ shows optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321967 Chiral complex from the following is
(Here, en $=$ ethylene diamine)

1 cis -

[{PtCl}_{2} {({NH}_{3})}_{2}]

2 trans

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

3 trans -

{[Co {({NH}_{3})}_{4} {Cl}_{2}]}^{+}

4 cis

- {[{PtCl}_{2} (en)_{2}]}^{2 +}

Explanation:

The chiral complex is cis $-$ ${[{PtCl}_{2} (en)_{2}]}^{2 +}$ as there is no element of symmetry.
supporting img

JEE - 2023

CHXII09:COORDINATION COMPOUNDS

321968 Which of the following complex species is not expected to exhibit optical isomerism?

1

{[Co (en) {({NH}_{3})}_{2} {Cl}_{2}]}^{+}

2

[Co {({NH}_{3})}_{3} {Cl}_{3}]

3

{[Co (en)_{3} {Cl}_{2}]}^{+}

4

{[Co (en)_{2} {Cl}_{2}]}^{+}

Explanation:

Optical isomerism is exhibited by only those complexes which lack elements of symmetry.
$[Co {({NH}_{3})}_{3} {Cl}_{3}]$ shows facial as well as meridional isomerism.
But the forms contain plane of symmetry. Thus, this complex does not exhibit optical isomerism.

CHXII09:COORDINATION COMPOUNDS

321969 Which of the following will give a pair of enantiomers?

1

[Pt {({NH}_{3})}_{4} {Cl}_{2}]

2

[Co {({NH}_{3})}_{4} {Cl}_{2}] {NO}_{2}

3

[Cr {({NH}_{3})}_{6}] [Co (CN)_{6}]

4

[Co (en)_{2} {Cl}_{2}] Cl