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

${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$ is blue in colour because

Match the compounds of column $\mathrm{X}$ with oxidation state of column $\mathrm{Y}$.

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.

${\mathrm{E}}^{⊝}$ values for couples ${\mathrm{Cr}}^{3+}/{\mathrm{Cr}}^{2+}$ and ${\mathrm{Mn}}^{3+}/{\mathrm{Mn}}^{2+}$ are $-0.41$ and $+1.51$ volts, respectively. Considering these values, select the correct option from the following statements.

Which one of the following shows the highest magnetic moment?

Amongst the following the lowest degree of paramagnetism per mole of the compound at $298 \mathrm{K}$ will be shown by: