The complex of $Ni^{2+}$ ion and dimethylglyoxime contains $..........$ number of Hydrogen $(H)$ atoms.

The compounds having coordinated water are

$I$. $CrCl_3 \cdot 6 H_2 O$

$II$. $BaCl_2 \cdot 2 H_2 O$

$III$. $CuSO_4 \cdot 5 H_2 O$

Pentaaquachloridochromium $(III)$ chloride monohydrate complex has the formula.

Ethylenediamine $(en)$ is a:

$A$ complex compound of $Co^{3+}$ with molecular formula $CoCl_{x} \cdot yNH_3$ gives a total of $3$ ions when dissolved in water. How many $Cl^{-}$ ions satisfy both primary and secondary valencies in this complex?

$A$ complex of platinum,ammonia,and chloride produces four ions per molecule in the solution. Which structure is consistent with this observation?