Identify the neutral ligand from the following:

What is the coordination number of $Co$ in the complex $[CoF_6]^{3-}$?

In the brown ring complex $[Fe(H_2O)_5(NO)]SO_4$, nitric oxide behaves as:

Which of the following is a negative ligand?

$A$ six-coordinate complex with the formula $CrCl_3 \cdot 6H_2O$ has a green color. $A$ $0.1 \ M$ solution of the complex,when treated with an excess of $AgNO_3$,yields $28.7 \ g$ of a white precipitate. What is the formula of the complex?

The charge on the $[Ag(CN)_2]^-$ complex is: