Identify the number of complexes that are opt | vedclass

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(C) The complexes are evaluated for optical activity:$1$. $[Co(en)_3]^{3+}$: Optically active (contains $en$ ligand,no plane of symmetry).$2$. $[Co(NH

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$2$

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(C) The complexes are evaluated for optical activity:$1$. $[Co(en)_3]^{3+}$: Optically active (contains $en$ ligand,no plane of symmetry).$2$. $[Co(NH_3)_4Cl_2]^{+}$: Optically inactive ($cis$-form has a plane of symmetry; $trans$-form has a plane of symmetry).$3$. $[CoCl_2(en)_2]^{+}$: Optically active ($cis$-form is chiral; $trans$-form is achiral).$4$. $[Co(NH_3)_3(NO_2)_3]$: Optically inactive ($fac$ and $mer$ isomers are achiral).Thus,there are $2$ optically active complexes.

Identify the number of complexes that are optically active:
$[Co(en)_3]^{3+}$; $[Co(NH_3)_4Cl_2]^{+}$; $[CoCl_2(en)_2]^{+}$; $[Co(NH_3)_3(NO_2)_3]$

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Identify the number of complexes that are optically active: $[Co(en)_3]^{3+}$; $[Co(NH_3)_4Cl_2]^{+}$; $[CoCl_2(en)_2]^{+}$; $[Co(NH_3)_3(NO_2)_3]$