What is the oxidation number of $Fe$ in $[Fe(H_2O)_5(NO)]^{2+}$ ion?

The correct formula for diamminesilver $(I)$ chloride is .....

Write the $IUPAC$ names of the following coordination compounds:
$(i)$ $[Co(NH_3)_6]Cl_3$
$(ii)$ $[Co(NH_3)_5Cl]Cl_2$
$(iii)$ $K_3[Fe(CN)_6]$
$(iv)$ $K_3[Fe(C_2O_4)_3]$
$(v)$ $K_2[PdCl_4]$
$(vi)$ $[Pt(NH_3)_2Cl(NH_2CH_3)]Cl$

In which of the following coordination compounds is the central metal ion in the zero oxidation state?

The correct $IUPAC$ name for the compound $[Co(NH_3)_4Cl(ONO)]Cl$ is

State the $IUPAC$ name of the following complex: $[Ph_4As][PtCl_2(H)(CH_3)]$