Download App

p- Block Elements — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryp- Block Elements2 Marks
Question
Halogens are strong oxidising agents. Why?
✓

Answer

The electron affinity of halogens is maximum among all the groups. Higher is electron affinity, more is the tendency to gain electron and thus more is the tendency to get itself reduced and more is oxidizing power.
$ X + e \rightarrow X^{-} $
$ \Delta H = -EA $ (higher values)

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 p- Block Elements→p- 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

Explain the fact that in aryl alkyl ethers (i) the alkoxy group activates the benzene ring towards electrophilic substitution and (ii) it directs the incoming substituents to ortho and para positions in benzene ring.
→
When $\ce{MnO_2}$ is fused with $\ce{KOH}$ in the presence of $\ce{KNO}_3$ as an oxidizing agent, it gives a dark green compound $(A)$. Compound $(A)$ disproportionates in acidic solution to give purple compound $(B)$. An alkaline solution of compound $(B)$ oxidises $KI$ to compound $(C)$ whereas an acidified solution of compound $(B)$ oxidises $KI$ to $(D)$. Identify $(A), (B), (C),$ and $(D).$
→
State two main functions of carbohydrates.
→
How are the following conversions carried out?
  1. Benzyl chloride to benzyl alcohol,
  2. Methyl magnesium bromide to 2-methylpropan-2-ol.
→
Explain the reaction of alcohols with hydrogen halides.Short note: Lucas test
→
Concentrated nitric acid used in laboratory work is $68\%$ nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is $1.504 g mL^{–1}?$
→
Name the products of hydrolysis of sucrose. Why is sucrose not a reducing sugar? 
→
Explain the mechanism of enzyme action.
→
Give examples and suggest reasons for the following features of the transition metal chemistry The lowest oxide of transition metal is basic, the highest is amphoteric$/$acidic.
→
State Kohlrausch law of independent migration of ions. Why does the conductivity of a solution decrease with dilution?
→