Embibe Experts Solutions for Chapter: The d- and f-Block Elements, Exercise 4: EXERCISE-III (Analytical Questions)

Highest stable $\mathrm{Mn}$ fluoride is ${\mathrm{MnF}}_4$, whereas, highest $\mathrm{Mn}$ oxide is ${\mathrm{Mn}}_2{\mathrm{O}}_7$ due to:

Four successive members of the first-row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionisation enthalpy? 

Which series of reactions correctly represents chemical relations related to iron and its compound

The chromyl chloride vapours are dissolved in water and acetic acid, and barium acetate solution is added, then:

${\mathrm{Cu}}^{+}$ ion is not stable in aqueous solution, due to-

Assertion : Solution of ${\mathrm{Na}}_2{\mathrm{CrO}}_4$ in water is intensely coloured.

Reason : Oxidation state of $\mathrm{Cr}$ in ${\mathrm{Na}}_2{\mathrm{CrO}}_4$ is $+\mathrm{VI}$.

Which of the following order is not correct?

Which of the following is true about metal-$\mathrm{EDTA}$ complex (if it is a $3\mathrm{d}$ metal)?