Download App

The d & f Block Elements — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements3 Marks
Question
Answer the following questions:
Compare non transition and transition elements on the basis of their.
  1. Variability of oxidation states.
  2. Stability of oxidation states.
✓

Answer

  1. Oxidation states of transition elements differ from each other by unity. In non-transition elements oxidation states normally differ by a unit of two.
  2. In transition elements higher oxidation states are favoured by heavier elements whereas in non-transition elements lower oxidation state is favoured by heavier elements.

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 "3 Marks Question" from The d & f Block Elements→The d & 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

(a) Write the product when D-glucose reacts with conc. $HNO_3$.
(b) Amino acids show amphoteric behaviour. Why?
(c) Write one difference between $\alpha$-helix and $\beta$-pleated structures of proteins.
→
Giving an example for each describe the following reactions:
  1. Hofmann’s bromamide reaction.
  2. Gatterman reaction.
  3. A coupling reaction.
→
How can you determine the rate law of the following reaction?
$2\text{NO}(\text{g})+\text{O}_2(\text{g})\xrightarrow{\ \ \ \ \ }2\text{NO}_2(\text{g})$
→
  1. Calculate $\Delta rG^{o }$ for the reaction:
$Mg (s) + Cu^{2+} (aq) \rightarrow Mg^{2+} (aq) + Cu (s)$
Given: $E^o_{cell} = + 2.71 V, 1 F = 96500 C mol^{–1}$
  1. Name the type of cell which was used in Apollo space programme for providing electrical power.
→
Why is fructose a reducing sugar?
→
A copper-silver cell is set up. The copper ion concentration in it is $0.10 M$. The concentration of silver ion is not known. The cell potential measured $0.422 V$. Determine the concentration of silver ion in the cell.
$\text{Given: E}^{o}_{\text{Ag}^{+}/\text{Ag}}=+0.80\text{V},\text{E}^{o}_{\text{Cu}^{2+}/\text{Cu}}=+0.34\text{V}.$
→
Write structural formulas and names of four possible aldol condensation products from propanal and butanal in each case indicate which aldehyde acts as nucleophile and which as electrophile.
→
Calculate the charge of one mole of electrons.
→
a. Give the chemical reaction involved when $p-$ nitrotoluene undergoes Etard reaction.
b. Why does Benzoic acid exist as a dimer in an aprotic solvent?
c. Benzene on reaction with methylchloride in the presence of anhydrous $\ce{AlCl3}$ forms toluene. What is the expected outcome if benzene is replaced by benzoic acid? Give a reason for your answer.
→
Describe the following:
i. Acetylation
ii. Cannizzaro reaction
iii. Cross aldol condensation
iv. Decarboxylation
→