Download App

The d- and f-Block Elements — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryThe d- and f-Block Elements2 Marks
Question
What are interstitial compounds? Why are such compounds well known for transition metals?
✓

Answer

In the crystal lattice of post-transition metals,when small sized atoms like H, N, B or C are arranged in the spaces (interspaces) between the atoms, then the compounds formed are called interstitial compounds.
Example : $TiC , Mn _4 N, Fe _3 H , VH _{0,56}$ and $TiH _{1,7}$ etc. metals in these compounds do not have any normal oxidation state. Transition elements have vacant orbitals, hence they form interstitial compounds easily.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from The d- and f-Block Elements→The d- and f-Block Elements — all question types→Chemistry STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Give the major products that are formed by heating the following ethers with HI.
$ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{|}\\\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{O}-\text{C}-\text{CH}_2-\text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{|}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3$
→
A certain reaction is $50\%$ complete in $20$ minutes at $300 K$ and the same reaction is again $50\%$ complete in $5$ minutes at $350 K.$ Calculate the activation energy if it is a first order reaction. $\ce{[R = 8.314 JK^{-1}mol^{-1}, \log 4 = 0.602]}.$
→
How are vitamins classified? Name the vitamin responsible for the coagulation of blood.
→
Give the structures of A, B and C in the following reaction:$\text{C}_6\text{H}_5\text{NO}_2\xrightarrow[]{\text{Fe}/\text{HCl}}\text{A}\xrightarrow[273\text{K}]{\text{NaNO}_2+\text{HCl}}\text{B}\xrightarrow[\Delta]{\text{H}_2\text{O}/\text{H}^+}\text{C}$
→
How are $Na , Mg$ and Al are obtained from electrolysis?
→
  1. Gas $(A)$ is more soluble in water than Gas $(B)$ at the same temperature. Which one of the two gases will have the higher value of $K_H ($Henry's constant$)$ and why?
  2. In non$-$ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?
→
Write the equation of the reaction of hydrogen iodide with :
1-propoxypropane
→
Which alkyl halide from the following pairs would you expect to react more rapidly by an $\ce{S_N2}$ mechanism? Explain your answer.
$\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{Br}\ \text{or}\ \text{CH}_3\text{CH}_2\text{CH}\text{CH}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \mid\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Br}$
→
Write the IUPAC name of the following :
(i) $\left[ Cu \left( H _2 O \right)_4\right]^{+2}$
(ii) $\left[ Co \left( NH _3\right)_6\right] Br _3$
(iii) $\left[ Fe ( CN )_6\right]^{3-}$
→
Explain the following with an example
(i) Reaction of phenol with zine dust.
(ii) Oxidation reaction of phenol.
→