What is the total number of ligands present in $[CoCl_{2}(NH_{3})_{4}]Cl$?

The number of donor sites in dimethyl glyoxime,glycinato,diethylene triamine and $EDTA$ are respectively:

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

In the complex $[E(en)_2(C_2O_4)]NO_2$,the oxidation state and coordination number of the element $'E'$ are respectively (where $(en)$ is ethylenediamine):

$A$ $200 \ mL$ solution $X$ contains $0.02 \ mol$ of $[Co(NH_3)_5Br]Cl_2$ and $0.02 \ mol$ of $[Co(NH_3)_5Cl]SO_4$. If solution $X$ is treated with excess $AgNO_3$ and excess $BaCl_2$,what will be the number of moles of precipitates $Y$ and $Z$ formed,respectively?

When $AgNO_3$ solution is added in excess to $1 \ M$ solution of $CoCl_3 \cdot X \ NH_3$,one mole of $AgCl$ is formed. What is the value of '$X$'?