Question:

Which one of the following statements about the zeolites is false ?

Updated On: Jul 12, 2022
  • They are used as cation exchangers
  • They have open structure which enables them to take up small molecules
  • Zeolites are aluminosilicates having three dimensional network
  • Some of the $SiO_4^{ 4 - }$ units are replaced by $ AlO_4^{ 5 - }$ and $ AlO_6^{ 9 - } $ ions in zeolites
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The Correct Option is D

Solution and Explanation

Zeolites are aluminosilicates having three dimensional open structure in which four or six membered rings predominates. Thus, due to open chain structure, they have cavities and can take up water and other small molecules.
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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: