NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

Stability order of complexes is $\left[\mathrm{Cr}(\mathrm{ox})_3\right]^{3-} < \left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} < \left[\mathrm{CrF}_6\right]^{3-}$

The octahedral complex formed by joining the $\mathrm{CN}^{-}$ ligands to $\mathrm{Fe}^{+3}$ ion has theoretical value of spin magnetic moment equal to 1.73 B.M.

In $\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}$ both $\mathrm{Cu}-\mathrm{O}$ and $\mathrm{Cu}-\mathrm{S}$ coordinate bonds are present

Stability of complex is: $\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+} > \left[\mathrm{Ni}(\mathrm{en})_3\right]^{2+}$