The purple colour of $KMnO_4$ is due to the transition
$C.T. \,(L \to M)$
$C.T. \,(M \to L)$
$d -d$
$p-d$
Which of the following statement(s) is(are) correct with reference to the ferrous and ferric ions
Among $Co ^{3+}, Ti ^{2+}, V ^{2+}$ and $Cr ^{2+}$ ions, one if used as a reagent cannot liberate $H _{2}$ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is $......B.M$. (Nearest integer)
Metal-metal bonding is more frequent in $4d$ or $5d$ series than in $3d$ series due to
Which metal does not give the following reaction $M +$ water or steam $ \to $oxide $ + H$ $\downarrow$
Transition element makes complex compound due to