Given below are two statements : Statement I : [Co (NH_3 )_6 ]^ 3+ is a homoleptic complex whereas [Co (NH_3 )_4 Cl_2 ]^ + is a heteroleptic complex. Statement II : Complex [Co (NH_3 )_6 ]^ 3+ has only one kind of ligands but [Co (NH_3 )_4 Cl_2 ]^ + has more than one kind of ligands. In the light of the above statements, choose the correct answer from the options given below.

Given below are two statements : Statement I : [Co (NH_3 )_6 ]^ 3…

MCQ

Given below are two statements :

Statement I : $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ is a homoleptic complex whereas $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$is a heteroleptic complex.

Statement II : Complex $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ has only one kind of ligands but $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$has more than one kind of ligands.

In the light of the above statements, choose the correct answer from the options given below.

A
Both Statement $I$ and Statement $II$ are false
B
Statement $I$ is true but Statement $II$ is false
C
Statement $I$ is false but Statement $II$ is true
✓
Both Statement $I$ and Statement $II$ are true

✓

Answer

Correct option: D.

Both Statement $I$ and Statement $II$ are true

d
$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ is a homoleptic complex as only one type of ligands $\left(\mathrm{NH}_3\right)$ is coordinated with $\mathrm{Co}^{3+}$ ion. While $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$is a heteroleptic complex in which $\mathrm{Co}^{3+}$ ion is ligated with more than one type of ligands, i.e., $\mathrm{NH}_3$ and $\mathrm{Cl}^{-}$.