The $IUPAC$ name of $[(CO)_5Mn - Mn(CO)_5]$ is ...........

$A$ complex compound in which the oxidation number of a metal is zero is

The $IUPAC$ name for the complex $[Co(NO_2)(NH_3)_5]Cl_2$ is :

The oxidation number of iron in potassium ferrocyanide is

State the $IUPAC$ name of the following complex: $[Co(H_{2}NCH_{2}CH_{2}NH_{2})_{3}]_{2}(SO_{4})_{3}$

Write the formulas for the following coordination compounds:
$(a)$ Tetraammineaquachloridocobalt $(III)$ chloride
$(b)$ Potassium tetrahydroxidozincate $(II)$
$(c)$ Potassium trioxalatoaluminate $(III)$
$(d)$ Dichloridobis(ethane$-1,2-$diamine)cobalt $(III)$
$(e)$ Tetracarbonylnickel $(0)$