Among (i) [Cr(en)3]3+, (ii) trans - [Cr(en)2Cl2]+, (iii) cis - [Cr(en)2Cl2]+, (iv) [CO(NH3)4Cl2]+, the optically active complexes are

Question

Among (i) [Cr(en)3]3+, (ii) trans - [Cr(en)2Cl2]+, (iii) cis - [Cr(en)2Cl2]+, (iv) [CO(NH3)4Cl2]+, the optically active complexes are (A) (i) and (ii) (B) (i) and (iii) (C) (ii) and (iii) (D) (ii) and (iv)

Tardigrade Admin · Accepted Answer

Optically active complexes are those complexes in which the mirror images are non-superimposable on each other. Complexes of type

[M (AA)_{3}]

, cis

[M (AA)_{2} B_{2}]

are optically active. The type of complexes given follows :

Complexes	Types of complexes
$[C r (e n)_{3}]^{3 +}$	$[M (AA)_{3}]$
trans- $[C x (e n)_{2} C l_{2}]^{+}$	trans- $[M (AA)_{2} C l_{2}]$
cis- $[C r (e n)_{2} C l_{2}]^{+}$	cis- $[M (AA)_{2} C l_{2}]$
$[C o (N H_{3})_{4} C l_{2}]^{+}$	$[M A_{4} B_{2}]$

Thus, among the given options

[C r (e n)_{3}]^{3 +}

and cis

[C r (e n)_{2} C l_{2}]^{+}

are optically active.

Q. Among (i)[Cr(en)3​]3+, (ii) trans - [Cr(en)2​Cl2​]+, (iii) cis - [Cr(en)2​Cl2​]+, (iv)[CO(NH3​)4​Cl2​]+, the optically active complexes are

(i) and (ii)

(i) and (iii)

(ii) and (iii)

(ii) and (iv)

Q. Among $(i) [C r (e n)_{3}]^{3 +}$ ,
$(ii)$ trans - $[C r (e n)_{2} C l_{2}]^{+}$ ,
$(iii)$ cis - $[C r (e n)_{2} C l_{2}]^{+}$ ,
$(i v) [CO (N H_{3})_{4} C l_{2}]^{+}$ ,
the optically active complexes are