When we heat lead nitrate [Pb(NO3)2] in a boiling tube, we observe the emission of brown fumes. Which one the following is the brown gas?

When we heat lead nitrate [Pb(NO3)2] in a boiling tube, we observe the

1.	When we heat lead nitrate [Pb(NO3)2] in a boiling tube, we observe the emission of brown fumes. Which one the following is the brown gas?
A.	NO
B.	N2O2
C.	NO3
D.	NO2
Answer» E.