Berkelium
Data tables and historic information.
Britannica Nobel Prizes: Berkelium
Overview and basic data.
ChemicalElements.com: Berkelium
Basic information, atomic structure, and isotopes.
EnvironmentalChemistry.com: Berkelium
Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental: Berkelium
Basic physical and historical information.
Lenntech: Berkelium
Physical data, chemical properties, and health effects.
The Columbia Encyclopedia: Berkelium
Overview for the general reader.
Visual Elements: Berkelium
General and physical information, and key isotopes.
WebElements: Berkelium
Extensive information on history, compounds, and properties.