General Properties of d-Block Elements

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

The inert pair effect is not found in transition metals, but they can act as catalyst. The transition metals used as catalyst in Haber's process is _____.

The inert pair effect not found in the transition metals is due to _____.

What is the role of $\mathrm{s}-$electrons in $\mathrm{d}-$block elements?

The elements of group 11 are called coinage elements because they are used in _____ coins.

Are 12th group elements are called coinage elements?

Complete the following catalytic mechanism,

$$\begin{gathered} \_\_\_\_\_+ 2 {\mathrm{I}}^{-}\to \_\_\_\_\_ {\mathrm{Fe}}^{2+}+{\mathrm{I}}_2 \\ 2 {\mathrm{Fe}}^{2+}+{\mathrm{S}}_2{{\mathrm{O}}_8}^{2-}\to 2 {\mathrm{Fe}}^{3+} +\_\_\_\_\_ \end{gathered}$$

Write the catalytic mechanism of the reaction between iodide and persulphate ions.

When iron$\left(\mathrm{III}\right)$ catalyses the reaction between iodide and persulphate ions. Iron acts as a catalyst.

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?

Transition elements show variable state oxidation because there is a very large energy difference in between $(\mathrm{n}-1)\mathrm{d}$ and $\mathrm{ns}$ orbitals.

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