What is the difference between molecular compound and complex compound ?

Give the IUPAC names of the compounds:

${\left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]}^{+}$

Give the IUPAC names of the compounds:

${\left[\mathrm{Cu}{\left({\mathrm{NH}}_3\right)}_4\right]}^{+}$

Give the IUPAC names of the compounds:

$\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_4{\mathrm{Cl}}_2\right]$

Give the IUPAC names of the compounds:

${\mathrm{K}}_2\left[{\mathrm{PtCl}}_6\right]$

Give the IUPAC names of the compounds:

${\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]}^{4-}$

Give the IUPAC names of the compounds:

${\left[\mathrm{Co}{\left(\mathrm{en}\right)}_2{\mathrm{Cl}}_2\right]}_2{\mathrm{SO}}_4$

Give the IUPAC names of the compounds:

$\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_6\right]{\left({\mathrm{NO}}_3\right)}_2$