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What is Californium?
Californium


Periodic Table
0
Symbol
Cf 0
Group Number
Not Available 0
Period Number
7 1
Block
f block 0
Element Family
Actinide 0
CAS Number
7440713 20
Space Group Name
P63/mmc 0
Space Group Number
194.00 5
Facts
0
Interesting Facts
  • Californium metal is very harmful and highly radioactive.
  • Californium metal is the heaviest metal.
0
Sources
Made by Bombarding Curium with Helium Ions 0
History
0
Who Discovered
Lawrence Berkeley National Laboratory 0
Discovery
In 1950 0
Abundance
0
Abundance In Universe
Not Available 0
Abundance In Sun
~-9999 % 0
Abundance In Meteorites
Not Available 0
Abundance In Earth's Crust
Not Available 0
Abundance In Oceans
Not Available 0
Abundance In Humans
Not Available 0
Uses
0
Uses & Benefits
  • Californium metal has a very strong neutron emitter. It is used as a metal detector.
  • It also used as an identifier to check Water and oil layers in oil wells.
0
Industrial Uses
Chemical Industry 0
Medical Uses
NA 0
Other Uses
Alloys, Nuclear Research 0
Biological Properties
0
Toxicity
Toxic 0
Present in Human Body
No 0
In Blood
0.00 Blood/mg dm-3 37
In Bone
0.00 p.p.m. 36
Physical
0
Melting Point
900.00 °C 50
Boiling Point
1,470.00 °C 59
Appearance
0
Physical State
Solid 0
Color
Silver 0
Luster
NA 0
Hardness
0
Mohs Hardness
3.00 12
Brinell Hardness
Not Available 0
Vickers Hardness
Not Available 0
Speed of Sound
Not Available 0
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Allotropes
No 0
α Allotropes
Not Available 0
β Allotropes
Not Available 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Cf 0
Isotopes
0
Known Isotopes
20 19
Electronegativity
0
Pauling Electronegativity
1.30 32
Sanderson Electronegativity
Not Available 0
Allred Rochow Electronegativity
1.20 27
Mulliken-Jaffe Electronegativity
Not Available 0
Allen Electronegativity
Not Available 0
Electropositivity
0
Pauling Electropositivity
2.70 22
Ionization Energies
0
1st Energy Level
608.00 kJ/mol 49
2nd Energy Level
1,206.00 kJ/mol 60
3rd Energy Level
2,267.00 kJ/mol 58
4th Energy Level
3,599.00 kJ/mol 52
5th Energy Level
Not Available 0
6th Energy Level
Not Available 0
7th Energy level
Not Available 0
8th Energy Level
Not Available 0
9th Energy Level
Not Available 0
10th Energy Level
Not Available 0
11th Energy Level
Not Available 0
12th Energy Level
Not Available 0
13th Energy Level
Not Available 0
14th Energy Level
Not Available 0
15th Energy Level
Not Available 0
16th Energy Level
Not Available 0
17th Energy Level
Not Available 0
18th Energy Level
Not Available 0
19th Energy Level
Not Available 0
20th Energy Level
Not Available 0
21st Energy Level
Not Available 0
22nd Energy Level
Not Available 0
23rd Energy Level
Not Available 0
24th Energy Level
Not Available 0
25th Energy Level
Not Available 0
26th Energy Level
Not Available 0
27th Energy Level
Not Available 0
28th Energy Level
Not Available 0
29th Energy Level
Not Available 0
30th Energy Level
Not Available 0
Electrochemical Equivalent
3.12 g/amp-hr 15
Electron Work Function
Not Available 0
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility 0
Atomic
0
Atomic Number
98 20
Electron Configuration
[Rn] 5f10 7s2 0
Crystal Structure
Double Hexagonal Close Packed (DHCP) 0
Crystal Lattice
DHCP-Crystal-Structure-of-Californium.jpg#100 0
Atom
0
Number of Protons
98 20
Number of Neutrons
153 9
Number of Electrons
98 20
Radius of an Atom
0
Atomic Radius
186.00 pm 9
Covalent Radius
Not Available 0
Van der Waals Radius
Not Available 0
Atomic Weight
251.00 amu 17
Atomic Volume
Not Available 0
Adjacent Atomic Numbers
0
Previous Element
86 0
Next Element
52 0
Valence Electron Potential
44.50 (-eV) 38
Lattice Constant
338.00 pm 47
Lattice Angles
π/2, π/2, 2 π/3 0
Lattice C/A Ratio
Not Available 0
Mechanical
0
Density
0
Density At Room Temperature
15.10 g/cm3 21
Density When Liquid (at m.p.)
Not Available 0
Tensile Strength
Not Available 0
Viscosity
Not Available 0
Vapor Pressure
0
Vapor Pressure at 1000 K
Not Available 0
Vapor Pressure at 2000 K
Not Available 0
Elasticity properties
0
Shear Modulus
Not Available 0
Bulk Modulus
Not Available 0
Young's Modulus
Not Available 0
Poisson Ratio
Not Available 0
Other Mechanical Properties
Malleable, Sectile 0
Magnetic
0
Magnetic Characteristics
0
Specific Gravity
15.10 13
Magnetic Ordering
Paramagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Electrical Properties
0
Electrical Property
Unknown 0
Resistivity
Not Available 0
Electrical Conductivity
Not Available 0
Electron Affinity
Not Available 0
Thermal
0
Specific Heat
Not Available 0
Molar Heat Capacity
Not Available 0
Thermal Conductivity
Not Available 0
Critical Temperature
Not Available 0
Thermal Expansion
Not Available 0
Enthalpy
0
Enthalpy of Vaporization
Not Available 0
Enthalpy of Fusion
Not Available 0
Enthalpy of Atomization
Not Available 0
Standard Molar Entropy
Not Available 0
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