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Element 98 - Californium (Cf) sound

After the state and University of California; discovered 1950. Not until 1960 did californium exist in visible amounts. But the three-tenths of a millionth of a gram of californium oxychloride is enough to provide scientists with a veritable textbook on the element.

Properties

Atomic Number: 98
Atomic Weight: (251)
Electron Configuration (at ground state): 1s22s22p63s23p63d104s24p64d105s25p64f145d105f106s26p67s2
Oxidation States (Bold most stable): +3
Melting Point (K): 1170
Mass Number (Bold naturally occurring) -- Half-Life -- Disintigration Type: 249 -- 351 years -- alpha particle emission
251 -- 900 years -- alpha particle emission
First Ionization Potential (V): 6.3
Electronegativity (Pauling's): 1.3
Thermal Conductivity (at 300K -- W m-1 K-1): 10