General Properties of the Transition Elements

The correct order of magnetic moments (spin only values in B.M.) among the species involved is

Assertion: Transition metals and their complexes show catalytic activity.

Reason: The activation energy of a reaction is lowered by the catalyst.

Which of the following compounds is expected to be colored?

Among the following options, identify the one which exhibits the greatest number of oxidation states.

Which of the following are the transition metal ions responsible for colour in ruby and emerald respectively?

Find the metallic and ferromagnetic substance.

Which out of the following can act as a best reducing agent?

The colour and magnetic nature of manganate ion $\left(\text{M}\text{n}{\text{O}}_4^{{\mathrm{2-}}_{}}\right)$ is-

Which forms interstitial compounds?

How many of the following reactions are disproportionation reactions?

$\left(\mathrm{i}\right)$ ${\mathrm{Cu}}^{+}⟶{\mathrm{Cu}}^{2+}+\mathrm{Cu}$
$\left(\mathrm{ii}\right)$ $3{\mathrm{MnO}}_4^{-}+4{\mathrm{H}}^{+}⟶2{\mathrm{MnO}}_4^{-}+{\mathrm{MnO}}_2+2{\mathrm{H}}_2\mathrm{O}$
$\left(\mathrm{iii}\right)$ $2{\mathrm{KMnO}}_4⟶{\mathrm{K}}_2{\mathrm{MnO}}_4+{\mathrm{MnO}}_2+{\mathrm{O}}_2$
$\left(\mathrm{iv}\right)$ $2{\mathrm{MnO}}_4^{-}+3{\mathrm{Mn}}^{2+}+2{\mathrm{H}}_2\mathrm{O}⟶5{\mathrm{MnO}}_2+4{\mathrm{H}}^{+}$

Which of the following represents the incorrect order of property mentioned?

An element of $3\mathrm{d}-$transition series shows two oxidation states $\mathrm{x}$ and $\mathrm{y}$ differing by two units. Then compounds in oxidation state

Which of the following statements is incorrect?

Which of the following compound is expected to show similar magnetic behavior?

(Atomic no. of$\mathrm{Fe}$ is $26, \mathrm{Cu}$ is $29, \mathrm{V}$ is $23, \mathrm{Mn}$ is $25$)

Metals that are usually used as catalysts belong to

Which of the two have an almost similar size?

Which of the following oxide shows electrical properties like metals?

The metal that is present in brass, bronze, and German silver is :