The secondary valency and the number of hydrogen bonded water molecule$(s)$ in $CuSO_{4} \cdot 5H_{2}O,$ respectively,are :

Which among the following coordination compounds does not have a coordination number equal to the number of ligands?

One mole of the coordination compound $Co(NH_3)_5Cl_3$ gives $3$ moles of ions upon dissolution in water. Furthermore,one mole of this complex reacts with $2$ moles of $AgNO_3$ solution to produce $2$ moles of $AgCl(s)$. The structure of the complex is:

When aluminium chloride is dissolved in water, it gives

Match List-$I$ with List-$II$:

List-$I$ (Complex)	List-$II$ (Primary valency and Secondary valency)
$(A)$ $[Co(en)_2 Cl_2] Cl$	$(I)$ $3, 6$
$(B)$ $[Pt(NH_3)_2 Cl(NO_2)]$	$(II)$ $2, 4$
$(C)$ $Hg[Co(SCN)_4]$	$(III)$ $3, 4$
$(D)$ $[Mg(EDTA)]^{2-}$	$(IV)$ $2, 6$

Choose the correct answer from the options given below:

Assertion : $A$ chelating ligand must possess two or more lone pairs at such a distance that it may form suitable strain-free rings at the metal ion.
Reason : $H_2N-NH_2$ is a chelating ligand.