What is the coordination number of $Pt$ in cisplatin?

Which of the following complexes gives a white precipitate with a solution of barium chloride $(BaCl_2)$?

Explain double salts and coordination compounds.

Which of the following is a $\pi$-acid ligand?

The correct order of the stoichiometries of $AgCl$ formed when $AgNO_3$ in excess is treated with the complexes $CoCl_3 \cdot 6NH_3$,$CoCl_3 \cdot 5NH_3$,and $CoCl_3 \cdot 4NH_3$ respectively is:

Which of the following coordination compounds will yield the maximum amount of $AgCl$ upon reaction with an excess of $AgNO_3$ for $1 \ mol$ of the compound?