Question:

An element of group $14$ forms two oxides one of which is highly poisonous and neutral. Other oxide can be easily liquefied and compressed to give a solid which is used as a refrigerant under the name of drikold. The element and the oxides are

Updated On: Jul 6, 2022
  • $Si, SiO, SiO_{2}$
  • $Pb,PbO,PbO_{2}$
  • $C, CO, CO_{2}$
  • $Sn, SnO, SnO_{ 2}$
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The Correct Option is C

Solution and Explanation

$C$ forms two oxides $CO$ and $CO_{2}. CO$ is neutral and poisonous. $CO_{2}$ can be compressed to a refrigerant dry ice or solid $CO_{2}. SiO$ is unstable. $SnO$ and $PbO$ are amphoteric in nature.
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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: