All the carbons in the aromatic ring are sp2 hybridized and the bond angles are 120 degrees. The carbon in the methyl group is sp3 hybridized so its bond angles are 109.5 degrees. Nitrogen is also sp2 hybridized, and has 120 bond angles.
Boiling & Melting Point
Trinitrotoluene melts at 80 °C (176 °F) and has a boiling point of 295°C (563°F).
Trinitrotoluene has 3 nitro groups (-NO2) as functional group.