Elements
98

Cf

Californium

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.

Download Californium as a printable and fully scalable image

Get the free download here (JPEG, PDF, SVG)

FAQ's

What is the Melting Point for Californium?

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

What is the Boiling Point for Californium?

Californium has a Boiling Point of °F, meaning at °F 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.

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.

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
--
Pronounced

kal-eh-FOR-ni-em

Discovered by

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

Discovery date

1950

Orbital configuration
2,8,18,32,28,8,2

Download the Periodic Table

Explore Other Actinides

258
101

Md

Mendelevium
262
103

Lr

Lawrencium
237
93

Np

Neptunium
247
97

Bk

Berkelium
244
94

Pu

Plutonium
227
89

Ac

Actinium
247
96

Cm

Curium
252
99

Es

Einsteinium
243
95

Am

Americium
238.029
92

U

Uranium
259
102

No

Nobelium
232.038
90

Th

Thorium
231.036
91

Pa

Protactinium
257
100

Fm

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

Berkelium

97
Next

Einsteinium

99