Q. Pb on reaction with conc. $HNO_{3}$ gives

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$Pb\left(\right.NO_{3}\left(\left.\right)_{4}+NO_{3}$

$Pb\left(\right.NO_{3}\left(\left.\right)_{3}+N_{2}O$

$Pb\left(\right.NO_{3}\left(\left.\right)_{2}+NO_{2}$

$PbNO_{3}+NO$

Solution:

$HNO_{3}$ is the best solvent for lead and the reaction is as follows
$Pb+4HNO_{3}\left(\right.conc.\left.\right) \rightarrow Pb\left(\right.NO_{3}\left(\left.\right)_{2}+2NO_{2}+2H_{2}O$

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