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Californium
Californium




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Cf Element

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1 Periodic Table

1.1 Symbol

Cf

1.2 Group Number

Not Available
Rank: N/A (Overall)
Gadolinium Metal
0 17

1.6 Period Number

7
Rank: 1 (Overall)
Lithium Metal
2 7

1.5 Block

f block

1.6 Element Family

Actinide

1.7 CAS Number

7440713
Rank: 20 (Overall)
Aluminium Metal
7429905 54386242

1.12 Space Group Name

P63/mmc

1.13 Space Group Number

194.00
Rank: 5 (Overall)
Plutonium Metal
11 229

3 Facts

3.1 Interesting Facts

  • Californium metal is very harmful and highly radioactive.
  • Californium metal is the heaviest metal.

3.2 Sources

Made by Bombarding Curium with Helium Ions

3.3 History

3.3.1 Who Discovered

Lawrence Berkeley National Laboratory

3.3.2 Discovery

In 1950

3.4 Abundance

3.4.1 Abundance In Universe

Not Available
Rank: N/A (Overall)
Thallium Metal
5E-09 0.11

4.6.3 Abundance In Sun

~-9999 %
Rank: N/A (Overall)
Beryllium Metal
1E-08 0.1

5.4.2 Abundance In Meteorites

Not Available
Rank: N/A (Overall)
Gold Metal
1.7E-07 22

5.4.6 Abundance In Earth's Crust

Not Available
Rank: N/A (Overall)
Radium Metal
9.9E-12 8.1

5.4.10 Abundance In Oceans

Not Available
Rank: N/A (Overall)
Protactinium Metal
2E-23 1.1

5.4.13 Abundance In Humans

Not Available
Rank: N/A (Overall)
Radium Metal
1E-13 1.4

7 Uses

7.1 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.

7.1.1 Industrial Uses

Chemical Industry

7.1.2 Medical Uses

NA

7.1.3 Other Uses

Alloys, Nuclear Research

7.2 Biological Properties

7.2.1 Toxicity

Toxic

7.2.2 Present in Human Body

7% - Actinide Series Metals

7.2.3 In Blood

0.00 Blood/mg dm-3
Rank: 37 (Overall)
Plutonium Metal
0 1970

7.2.7 In Bone

0.00 p.p.m.
Rank: 36 (Overall)
Plutonium Metal
0 170000

11 Physical

11.1 Melting Point

900.00 °C
Rank: 50 (Overall)
Francium Metal
27 3410

12.2 Boiling Point

1,470.00 °C
Rank: 59 (Overall)
Flerovium Metal
147 5660

13.5 Appearance

13.5.1 Physical State

Solid

13.5.2 Color

Silver

13.5.3 Luster

NA

13.6 Hardness

13.6.1 Mohs Hardness

3.00
Rank: 12 (Overall)
Cesium Metal
0.2 8.5

13.8.2 Brinell Hardness

Not Available
Rank: N/A (Overall)
Cesium Metal
0.14 3490

13.11.2 Vickers Hardness

Not Available
Rank: N/A (Overall)
Palladium Metal
121 3430

13.12 Speed of Sound

Not Available
Rank: N/A (Overall)
Thallium Metal
818 16200

13.14 Optical Properties

13.14.1 Refractive Index

Not Available
Rank: N/A (Overall)
Mercury Metal
1.000933 1.7229

13.16.1 Reflectivity

Not Available
Rank: N/A (Overall)
Molybdenum Metal
58 97

13.18 Allotropes

No - Actinide Series Metals has it !

13.18.1 α Allotropes

Not Available

13.18.2 β Allotropes

Not Available

13.18.3 γ Allotropes

Not Available

14 Chemical

14.1 Chemical Formula

Cf

14.2 Isotopes

14.2.1 Known Isotopes

20
Rank: 19 (Overall)
Tennessine Metal
0 38

15.5 Electronegativity

15.5.1 Pauling Electronegativity

1.30
Rank: 32 (Overall)
Francium Metal
0.7 2.54

17.2.2 Sanderson Electronegativity

Not Available
Rank: N/A (Overall)
Cesium Metal
0.22 2.56

17.4.2 Allred Rochow Electronegativity

1.20
Rank: 27 (Overall)
Cesium Metal
0.86 1.82

17.4.5 Mulliken-Jaffe Electronegativity

Not Available
Rank: N/A (Overall)
Cesium Metal
0.62 2.48

17.4.9 Allen Electronegativity

Not Available
Rank: N/A (Overall)
Cesium Metal
0.659 2.7

17.5 Electropositivity

17.5.1 Pauling Electropositivity

2.70
Rank: 22 (Overall)
Gold Metal
1.46 3.3

17.7 Ionization Energies

17.7.1 1st Energy Level

608.00 kJ/mol
Rank: 49 (Overall)
Cesium Metal
375.7 26130

17.9.2 2nd Energy Level

1,206.00 kJ/mol
Rank: 60 (Overall)
Ruthenium Metal
710.2162 28750

17.11.2 3rd Energy Level

2,267.00 kJ/mol
Rank: 58 (Overall)
Osmium Metal
1600 34230

17.12.3 4th Energy Level

3,599.00 kJ/mol
Rank: 52 (Overall)
Thorium Metal
2780 37066

17.12.8 5th Energy Level

Not Available
Rank: N/A (Overall)
Dubnium Metal
4305.2 97510

17.12.10 6th Energy Level

Not Available
Rank: N/A (Overall)
Seaborgium Metal
5715.8 105800

1.2.3 7th Energy level

Not Available
Rank: N/A (Overall)
Bohrium Metal
7226.8 114300

1.6.1 8th Energy Level

Not Available
Rank: N/A (Overall)
Hassium Metal
8857.4 125300

1.8.2 9th Energy Level

Not Available
Rank: N/A (Overall)
Yttrium Metal
14110 134700

1.8.5 10th Energy Level

Not Available
Rank: N/A (Overall)
Strontium Metal
17100 144300

2.4.8 11th Energy Level

Not Available
Rank: N/A (Overall)
Yttrium Metal
19900 169988

2.4.14 12th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
22219 189368

2.4.20 13th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
26930 76015

3.2.5 14th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
29196 86450

4.1.2 15th Energy Level

Not Available
Rank: N/A (Overall)
Manganese Metal
41987 97510

4.2.1 16th Energy Level

Not Available
Rank: N/A (Overall)
Iron Metal
47206 109480

4.4.4 17th Energy Level

Not Available
Rank: N/A (Overall)
Cobalt Metal
52737 122200

4.4.7 18th Energy Level

Not Available
Rank: N/A (Overall)
Nickel Metal
58570 134810

4.4.12 19th Energy Level

Not Available
Rank: N/A (Overall)
Copper Metal
64702 148700

4.5.4 20th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
80400 171200

4.6.3 21st Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
87000 179100

5.2.2 22nd Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
93400 184900

5.2.6 23rd Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
98420 198800

5.3.3 24th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
104400 195200

5.3.8 25th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
121900 121900

5.3.10 26th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
127700 127700

5.3.14 27th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
133800 133800

5.3.18 28th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
139800 139800

5.3.20 29th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
148100 148100

5.3.24 30th Energy Level

Not Available
Rank: N/A (Overall)
Molybdenum Metal
154500 154500

5.4 Electrochemical Equivalent

3.12 g/amp-hr
Rank: 15 (Overall)
Beryllium Metal
0.16812 8.3209

5.5 Electron Work Function

Not Available
Rank: N/A (Overall)
Cesium Metal
2.14 5.65

5.8 Other Chemical Properties

Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility

6 Atomic

6.1 Atomic Number

98
Rank: 20 (Overall)
Lithium Metal
3 117

6.3 Electron Configuration

[Rn] 5f10 7s2

6.4 Crystal Structure

Double Hexagonal Close Packed (DHCP)

6.4.1 Crystal Lattice

6.5 Atom

6.5.1 Number of Protons

98
Rank: 20 (Overall)
Lithium Metal
3 117

6.7.1 Number of Neutrons

153
Rank: 9 (Overall)
Lithium Metal
4 184

7.2.1 Number of Electrons

98
Rank: 20 (Overall)
Lithium Metal
3 117

7.6 Radius of an Atom

7.6.1 Atomic Radius

186.00 pm
Rank: 9 (Overall)
Beryllium Metal
112 265

8.1.2 Covalent Radius

Not Available
Rank: N/A (Overall)
Beryllium Metal
96 260

8.1.7 Van der Waals Radius

Not Available
Rank: N/A (Overall)
Zinc Metal
139 348

8.3 Atomic Weight

251.00 amu
Rank: 17 (Overall)
Lithium Metal
6.94 294

8.7 Atomic Volume

Not Available
Rank: N/A (Overall)
Manganese Metal
1.39 71.07

8.10 Adjacent Atomic Numbers

8.10.1 Previous Element

8.10.2 Next Element

8.11 Valence Electron Potential

44.50 (-eV)
Rank: 38 (Overall)
Francium Metal
8 392.42

8.12 Lattice Constant

338.00 pm
Rank: 47 (Overall)
Beryllium Metal
228.58 891.25

9.2 Lattice Angles

π/2, π/2, 2 π/3

9.3 Lattice C/A Ratio

Not Available
Rank: N/A (Overall)
Beryllium Metal
1.567 1.886

10 Mechanical

10.1 Density

10.1.1 Density At Room Temperature

15.10 g/cm3
Rank: 21 (Overall)
Lithium Metal
0.534 40.7

10.2.2 Density When Liquid (at m.p.)

Not Available
Rank: N/A (Overall)
Lithium Metal
0.512 20

10.9 Tensile Strength

Not Available
Rank: N/A (Overall)
Indium Metal
2.5 11000

10.11 Viscosity

Not Available
Rank: N/A (Overall)
Mercury Metal
0.001526 0.001526

10.14 Vapor Pressure

10.14.1 Vapor Pressure at 1000 K

Not Available
Rank: N/A (Overall)
Cerium Metal
2.47E-11 121

11.1.2 Vapor Pressure at 2000 K

Not Available
Rank: N/A (Overall)
Tungsten Metal
2.62E-10 774

11.2 Elasticity properties

11.2.1 Shear Modulus

Not Available
Rank: N/A (Overall)
Potassium Metal
1.3 222

11.4.1 Bulk Modulus

Not Available
Rank: N/A (Overall)
Cesium Metal
1.6 462

11.5.2 Young's Modulus

Not Available
Rank: N/A (Overall)
Cesium Metal
1.7 528

11.9 Poisson Ratio

Not Available
Rank: N/A (Overall)
Beryllium Metal
0.032 0.47

11.11 Other Mechanical Properties

Malleable, Sectile

12 Magnetic

12.1 Magnetic Characteristics

12.1.1 Specific Gravity

15.10
Rank: 13 (Overall)
Lithium Metal
0.53 4500

12.3.2 Magnetic Ordering

Paramagnetic

12.3.3 Permeability

Not Available
Rank: N/A (Overall)
Bismuth Metal
1.25643E-06 0.0063

12.5.2 Susceptibility

Not Available
Rank: N/A (Overall)
Bismuth Metal
-0.000166 200000

12.8 Electrical Properties

12.8.1 Electrical Property

Unknown

12.8.2 Resistivity

Not Available
Rank: N/A (Overall)
Thallium Metal
0.18 961

12.10.3 Electrical Conductivity

Not Available
Rank: N/A (Overall)
Plutonium Metal
0.00666 0.63

12.15.1 Electron Affinity

Not Available
Rank: N/A (Overall)
Mercury Metal
0 222.8

16 Thermal

16.1 Specific Heat

Not Available
Rank: N/A (Overall)
Americium Metal
0.11 3.6

16.2 Molar Heat Capacity

Not Available
Rank: N/A (Overall)
Beryllium Metal
16.443 62.7

16.5 Thermal Conductivity

Not Available
Rank: N/A (Overall)
Neptunium Metal
6.3 429

16.9 Critical Temperature

Not Available
Rank: N/A (Overall)
Ytterbium Metal
26.3 3223

17.3 Thermal Expansion

Not Available
Rank: N/A (Overall)
Tungsten Metal
4.5 97

17.5 Enthalpy

17.5.1 Enthalpy of Vaporization

Not Available
Rank: N/A (Overall)
Zinc Metal
7.32 799.1

18.1.2 Enthalpy of Fusion

Not Available
Rank: N/A (Overall)
Cesium Metal
2.1 35.23

18.2.1 Enthalpy of Atomization

Not Available
Rank: N/A (Overall)
Mercury Metal
61.5 837

18.4 Standard Molar Entropy

Not Available
Rank: N/A (Overall)
Beryllium Metal
9.5 198.1