Question:

A one litre flask is full of brown bromine vapours. The intensity of brown colour of vapours will not decrease appreciably on adding to the flask some

Updated On: Apr 17, 2024
  • pieces of marble
  • animal charcoal powder
  • carbon tetrachloride
  • ) carbon disulphide
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The Correct Option is A

Solution and Explanation

Bromine is soluble in $CCI_4 \, and \, CS_2$ Animal charcoal also adsorbs on bromine water. But marble has no action with $Br_2$. So, after adding marble piece to the flask, there will be no decrement in the intensity of brown colour.
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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: