In complex compounds,the metal-ligand bond is:

Which of the following is a tridentate ligand?

The conductivity of a solution of a complex with the formula $CoCl_3(NH_3)_4$ corresponds to a $1:1$ electrolyte. What is the primary valency of the central metal ion?

What is the coordination number of the metal in $[Co(en)_2Cl_2]$?

The coordination number of chromium in $K[Cr(H_2O)_2(C_2O_4)_2]$ is

Which of the following complexes gives only one mole of $AgCl$ when reacted with excess $AgNO_3$?