The CFSE for octahedral $\left[\mathrm{CoCl}_6\right]^{4-}$ is $18,000 \mathrm{~cm}^{-1}$. The CFSE for tetrahedral $\left[\mathrm{CoCl}_4\right]^{2-}$ will be

Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type $\left[\mathrm{Pd}\left(\mathrm{C}_6 \mathrm{H}_5\right)_2(\mathrm{SCN})_2\right]$ and $\left[\mathrm{Pd}\left(\mathrm{C}_6 \mathrm{H}_5\right)_2(\mathrm{NCS})_2\right]$ are

The compounds $\left[\mathrm{Co}\left(\mathrm{SO}_4\right)\left(\mathrm{NH}_3\right)_5\right] \mathrm{Br}$ and $\left[\mathrm{Co}\left(\mathrm{SO}_4\right)\left(\mathrm{NH}_3\right)_5\right] \mathrm{Cl}$ represent

A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?

Which of the following species is not expected to be a ligand?