Basic Information

Name: Polonium 
Symbol: Po 
Atomic Number: 84 
Atomic Mass: (209.0) amu 
Melting Point: 254.0 °C (527.15 K, 489.2 °F) 
Boiling Point: 962.0 °C (1235.15 K, 1763.6 °F) 
Number of Protons/Electrons: 84 
Number of Neutrons: 125 
Classification: Metalloid 
Crystal Structure: Monoclinic 
Density @ 293 K: 9.4 g/cm3 
Color: Unknown
Date of Discovery: 1898 
Discoverer: Pierre and Marie Curie 
Name Origin: After Poland 
Uses: No uses known 
Obtained From: pitchblende, decay of radium