Electronic data		Thermal data		Steric data
Shells: 2,8,18,32,28,8,2 Orbitals: [Rn] 5f10 7s2 Electronegativity: 1.2, -- 1. Ionization potential: 6.30 eV 2. Ionization potential: -- eV 3. Ionization potential: -- eV Oxidation states: 4,3 Electrical conductivity: --		Melting point: -- °C Boiling point: -- °C Specific heat: -- J/gK Heat of fusion: -- kJ/mol Heat of vaporization: -- kJ/mol Thermal conductivity: 0.1 W/cmK		Atomic radius: -- Å Ionic radius: -- Å () Covalent radius: -- Å Atomic volume: -- cm³/mol Density (293 K): -- g/cm³ Crystal structure: --

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Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
245Cf	0	245.068	0	44m	EC,	View
246Cf	0	246.069	0	1.49d		View
247Cf	0	247	7/2	3.11h	EC,	View
248Cf	0	248.072	0	334d	,SF	View
249Cf	0	249.075	9/2	351y		View
250Cf	0	250.076	0	13.1y	,SF	View
251Cf	0	251.08	1/2	9.0E02y		View
252Cf	0	252.082	0	2.638y	,SF	View
253Cf	0	253	7/2	17.8d	-,	View
254Cf	0	254.087	0	60.5d	SF,	View

Legend

Name origin:	Named after the state and University of California.
Description:	Synthetic radioactive metal. Powerful neutron emitter.
Discovered by:	G.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
Year:	1950
Place:	United States
Sources:	Made by bombarding curium with helium ions.
Use(s):	It has no significant commercial applications.