Basic Information

Name: Einsteinium 
Symbol: Es 
Atomic Number: 99 
Atomic Mass: (252.0) amu 
Melting Point: Unknown 
Boiling Point: Unknown 
Number of Protons/Electrons: 99 
Number of Neutrons: 153 
Classification: Rare Earth 
Crystal Structure: Unknown 
Density @ 293 K: Unknown 
Color: Unknown
Date of Discovery: 1952 
Discoverer: Argonne, Los Alamos, University of California 
Name Origin: After Albert Einstein 
Uses: No uses known 
Obtained From: Man-made