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.

In the reaction, $2{\mathrm{CuCl}}_2+2{\mathrm{H}}_2\mathrm{O}+{\mathrm{SO}}_2\to \mathrm{A}+{\mathrm{H}}_2{\mathrm{SO}}_4+2\mathrm{HCl}$; $\mathrm{A}$ is

STATEMENT-$1$: Ammonical silver nitrate converts glucose to gluconic acid and metallic silver is precipitated

STATEMENT-$2$: Glucose acts as a weak reducing agent.

Ferric sulphate on heating gives:

At $300°\mathrm{C},{\mathrm{FeCl}}_3$

Lucas reagent is: