The oxidation number of $Cr$ in the complex $[Cr(H_2O)_4Cl_2]^+$ is:

$A$ complex whose $IUPAC$ name is not correctly written is:
Complex $ - $ Name

The $IUPAC$ name of the Wilkinson's catalyst $[RhCl(PPh_3)_3]$ is

$X$ is the number of acidic oxides among $VO_2$,$V_2O_3$,$CrO_3$,$V_2O_5$ and $Mn_2O_7$. The primary valency of cobalt in $[Co(en)_3]_2(SO_4)_3$ is $Y$. The value of $X+Y$ is $:$

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

The $I.U.P.A.C.$ name of ${K_3}[Ir({C_2}{O_4})_3]$ is