Basic Information

Name: Beryllium 
Symbol: Be 
Atomic Number: 4 
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) 
Number of Protons/Electrons: 4 
Number of Neutrons: 5 
Classification: Alkaline Earth 
Crystal Structure: Hexagonal 
Density @ 293 K: 1.8477 g/cm3 
Color: gray
Date of Discovery: 1798 
Discoverer: Fredrich Wohler 
Name Origin: From the mineral beryl 
Uses: spacecraft, missiles, aircraft 
Obtained From: beryl, chrysoberyl