Which of the following complexes can exhibit facial $(fac)$ and meridional $(mer)$ isomerism?

  • A
    $[Co(NH_3)_3Cl_3]$
  • B
    $[Co(NH_3)_4Cl_2]Cl$
  • C
    $[Co(en)_3]Cl_3$
  • D
    $[Co(NH_3)_5Cl]Cl_2$

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Identify the correct order of the spin-only magnetic moment.

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Which of the following complexes shows optical isomerism?

Geometric isomerism is exhibited by which of the following coordination compounds?

$STATEMENT-1$: The geometrical isomers of the complex $[M(NH_3)_4Cl_2]$ are optically inactive.
$STATEMENT-2$: Both geometrical isomers of the complex $[M(NH_3)_4Cl_2]$ possess a plane of symmetry.

Assertion : $[Co(NO_2)_3(NH_3)_3]$ does not show optical isomerism.
Reason : It has a plane of symmetry.

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