$IUPAC$ name of $H_2[PtCl_6]$ is

The $IUPAC$ name for $[(NH_3)_5Cr(OH)Cr(NH_3)_5]^{5+}$ is:

The oxidation state of platinum in $[Pt(NH_3)_5Cl]Cl_3$ is:

The correct nomenclature for $Fe_4[Fe(CN)_6]_3$ is

Identify true and false statements:
$(a)$ In the reaction $F_2 + O_2 \to O_2F_2$,oxygen is an oxidising agent.
$(b)$ Among $HClO, HClO_2, HClO_3$ and $HClO_4$,$HClO_2$ is the strongest acid.
$(c)$ Oxidation state of Nickel in $[Ni(CO)_4]$ is zero.
$(d)$ The reaction $BaO_2 + H_2SO_4 \to BaSO_4 + H_2O_2$ is a redox reaction.
The correct order of truth values is:

The $IUPAC$ name of $Na_3[Co(ONO)_6]$ is .....