#4 Berrylium

Beryllium is a silvery-white metal. It is relatively soft and has a low density. Uses. Beryllium is used in alloys with copper or nickel to make gyroscopes, springs, electrical contacts, spot-welding electrodes and non-sparking tools.

Atomic mass: 9.012182 amu

Melting point:1278.0 C (1551.15 K, 2332.4 F)

Boiling point:2970.0 C (3243.15 K, 5378.0 F)

Density:293 K: 1.8477 g/cm3