Question:

On heating, lead nitrate forms oxides of nitrogen and lead. The oxides formed are__________ .

Updated On: Jul 6, 2022
  • $N_2O$, $PbO$
  • $NO_2$, $PbO$
  • $NO$, $PbO$
  • $NO$, $PbO_2$
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The Correct Option is B

Solution and Explanation

Lead nitrate on heating it decomposes to lead monoxide $( PbP )$, nitrogen dioxide $\left( NO _{2}\right)$ and oxygen $\left( O _{2}\right)$. $2 Pb \left( NO _{3}\right)_{2} \rightarrow 2 PbO +4 NO _{2}+ O _{2}$ Hence option $B$ is correct.
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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: