Question:

Non-oxide ceramics can be

Updated On: Jul 6, 2022
  • $\ce{B4C}$
  • SiC
  • $\ce{Si3N4}$
  • All of these
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The Correct Option is D

Solution and Explanation

Ceramics are inorganic , non-metallic, solid minerals. They come in a variety of forms, including silicates (silica, $ {SiO2}$ with metal oxides), oxides (oxygen and metals), carbides (carbon and metals), aluminates (alumina, $ {Al2O3}$ with metal oxides) and nitrides. The given ceramics are $ {B4C}$ (carbides), SiC (carbides), $ {Si3N4}$ (nitrides) and thus, none of these is an oxide . All of these are nonoxide ceramics.
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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: