The complex compound $[Co(SCN)_2(NH_3)_4]Cl$ does not exhibit which of the following types of isomerism?

Identify the types of isomers shown in the structures $(i)$ and $(ii)$:

The value of 'spin only' magnetic moment for one of the following configurations is $2.84 \ BM$. The correct one is:

$26.7 \ g$ of a compound with the formula $PtCl_2Br_2 \cdot 6H_2O$ is taken for analysis. This compound exhibits stereoisomerism,and a total of $3$ stereoisomers exist. Find the loss in mass (in $g$) when the given amount of the compound is treated with concentrated $H_2SO_4$. (Molar mass: $PtCl_2Br_2 \cdot 6H_2O = 534 \ g \ mol^{-1}$)

What is the magnetic moment (in $B.M.$) of ${K_3}[FeF_6]$?

$[Ti(H_2O)_6]^{3+}$ is paramagnetic in nature due to