Embibe Experts Solutions for Chapter: The d- and f-Block Elements, Exercise 1: Exercise 1

For the process $\mathrm{Cu}\left(\mathrm{g}\right)\to {\mathrm{Cu}}^{+}\left(\mathrm{g}\right)+{\mathrm{e}}^{-}$, the electron is to be removed from ___________

In general, the melting and the boiling points of transition metals:

STATEMENT-$1$: The number of unpaired electrons in the following gaseous ions:
${\mathrm{Mn}}^{3+},{\mathrm{Cr}}^{3+},{\mathrm{V}}^{3+}$ and ${\mathrm{Ti}}^{3+}$ are $4,3,2$ and $1$, respectively.

STATEMENT-$2$: ${\mathrm{Cr}}^{3+}$ is the most stable in aqueous solution among these ions.

The gas responsible for underwater corrosion of iron and the product of corrosion, respectively, are -

Oxalic acid when treated with potassium permanganate in the presence of an acid, produces:

The number of moles of ${\mathrm{Br}}_2$ produced when two moles of potassium permanganate are treated with excess potassium bromide in aqueous acid medium is:

${\mathrm{MnO}}_2$ when fused with $\mathrm{KOH}$ and oxidized in air gives a dark green compound $\mathrm{X}$. In acidic solution, $\mathrm{X}$ undergoes disproportion to give an intense purple compound $\mathrm{Y}$ and ${\mathrm{MnO}}_2$. The compounds $\mathrm{X}$ and $\mathrm{Y}$. respectively, are

In an alkaline medium, the reaction of hydrogen peroxide with potassium permanganate produces a compound in which the oxidation state of $\mathrm{Mn}$ is _______.