Question: what are the physical properties of dubnium?
Answer: Atomic Mass Average: 262. Boiling Point: Coefficient of lineal thermal expansion/K-1: N/A. Conductivity Electrical: Thermal: 0.58 W/cmK. Description: Man made radioactive element. Flammablity Class: Freezing Point: see melting point. Heat of Vaporization: kJ/mol.