Question:

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion (A) : Reaction of conc. \(H_2SO_4\) on \(NaBr\) and \(NaI\) does not give \(HBr\) and \(HI\).

Reason (R) : \(HBr\) and \(HI\) are oxidised by conc. HSO to Br and I.

In the light of the above statements, choose the correct answer from the options given below

Updated On: Apr 6, 2023
  • If both Assertion and Reason are true, and Reason is a correct explanation of the Assertion
  • If both Assertion and Reason are true, but Reason is not a correct explanation of the Assertion
  • If Assertion is true, but Reason is false
  • If both Assertion and Reason are false
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The Correct Option is A

Solution and Explanation

$ H _{2} SO _{4}$ when react with $NaBr$ and $Nal$, give out $Br _{2}$ and $I _{2}$ as concentrated $H _{2} SO _{4}$ is a strong oxidising agent.
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Concepts Used:

P-Block Elements

  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
  • P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.

P block elements consist of: