Question

Among the following complexes, the total number of diamagnetic species is _____.

\(\left[\mathrm{Mn}\left(\mathrm{NH}_3\right)_6\right]^{3+},\left[\mathrm{MnCl}_6\right]^{3-},\)\(\left[\mathrm{FeF}_6\right]^{3-},\left[\mathrm{CoF}_6\right]^{3-},\left[\mathrm{Fe}\left(\mathrm{NH}_3\right)_6\right]^{3+} and\, \left[\mathrm{Co}(\mathrm{en})_3\right]^{3+}\)

[Given, atomic number: Mn = 25, Fe = 26, Co = 27; en = \(H_2NCH_2CH_2NH_2\)]

Answer 1

Correct answer is : 1

\(\left[\mathrm{Mn}\left(\mathrm{NH}_3\right) 6\right]^{3+} : \text{Paramagnetic}\)

\(\left[\mathrm{MnCl}_6\right]^{3-} : \text{Paramagnetic}\)

\(\left[\mathrm{FeF}_6\right]^{3-} :\text{Paramagnetic}\)

\(\left[\mathrm{CoF}_6\right]^{3-}: \text{Paramagnetic}\)

\(\left[\mathrm{Fe}\left(\mathrm{NH}_3\right)_6\right]^{3+} : \text{Paramagnetic}\)

\(\left[\mathrm{Co}(\mathrm{en})_3\right]^{3+}:\text{Diamagnetic}\)

Only 1 complex is diamagnetic.