Answer :

A is NO2 (Nitrogen dioxide)

B is N2O4 (solid colourless)


C is N2O3 (dinitrogen trioxide)


On heating lead nitrate(II) a brown gas A is produced


2Pb(NO3)2 2PbO + 4NO2 + O2


2NO2 N2O4


2NO + N2O4 2N2O3


STRUCTURE OF N2O4


5502f72988e24019da127cc690defe19.jpg


STRUCTURE OF N2O3



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