Elements
98

Cf

Californium

Pronounced

kal-eh-FOR-ni-em

Californium (Cf) is a silvery-white colored radioactive metal that has the atomic number 98 in the periodic table. It is an Actinoid Metal with the symbol Cf.

Californium was first produced in 1950 by Stanley Thompson, Glenn Seaborg, Kenneth Street and Albert Ghirorso working at UC Berkeley. To produce californium a sample of curium was bombarded by alpha particles creating californium and a neutron. The new element was named after the state of its discovery, California. Californium is found often in mineral mining and medical treatments. Californium has a. number of applications as it is a strong neutron emitter. It is a. useful neutron producer in nuclear reactions. it is also used in the treatment of cancers and analysers of coal. Californium was used in Russia to produce Oganesson in 2006, element 118. It is a solid metal at room temperature and it has a melting point of 900°c and a boiling point of 1470°c.

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FAQ's

What is the Melting Point for Californium?

Californium has a Melting Point of 900°C, meaning at 900°C it will turn to a liquid.

What is the Boiling Point for Californium?

Californium has a Boiling Point of °C, meaning at °C it will turn to a Gas.

What is the Electronegativity of Californium?

Californium's Electronegativty is 1.3. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

Discovered by

G.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.

Discovery date

1950

What is the Heat of Vaporization of Californium?

Californium has a Heat of Vaporization of kJ/mol.

Uses

It has no significant commercial applications.

Sources

Made by bombarding curium with helium ions.

About the author

Nathan M

Author

Nathan has a degree in BSc Biomedical Chemistry at Warwick University and a degree in PGCE Science at Wolverhampton University, UK. Nathan's subject matter ranges from general chemistry and organic chemistry. Nathan also created the curriculum on Breaking Atom in the course page.

Citation

"Californium" Published on Jan 04, 2020. https://breakingatom.com/elements/californium
98
Protons
98
Electrons
153
Neutrons

Cf

Element Symbol
Cf
Atomic Weight
251
Atomic Number
98
State
Solid
Melting Point
Unknown
900
°C
Boiling Point
Unknown
°C
Heat of Vaporization
Unknown
kJ/mol
Crystal Structure
Unknown
Thermoconductivity
0.1
Unknown
W/cmK
Shells
2,8,18,32,28,8,2
Group
Actinide
Period
7
Block
F Block
Orbitals
[Rn] 5f10 7s2
Coefficient of Thermal Expansion
--
Covalent Radius
--
Density at 293K
--
Electrical Conductivity
--
First Ionization Potential
6.30 V
Second Ionization Potential
--
Third Ionization Potential
--
Ionic Radius
--
Oxydation States
4,(3)
Lattice Parameter
--
Lattice Parameter 2
--
Lattice Parameter 3
--
Orbital configuration
2,8,18,32,28,8,2

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Explore Other Actinides

The actinide series contains 15 metallic elements from number 89 (actinium) to 103 (lawrencium). They are located in group 3 in the periodic table.
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