Question: what are some physical and chemical properties of aluminum?
Answer: Melting point: 660 °C (for AL 99,99 acc. to composition / alloying higher resp. lower) Boiling point: 2500 °C (acc. to composition / alloying higher resp. lower) Density: 2,70 g/cm³ Relative atomic mass 26,98. Oxidation number: 3. Atomic radius: 143,1 pm. Ionic radius: 57 pm (+3) Electrical conductivity: 36 m/Ohm·mm²