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Cm Element
Curium


Periodic Table
0
Symbol
Cm 0
Group Number
Not Available 0
Period Number
7 1
Block
f block 0
Element Family
Actinide 0
CAS Number
7440519 36
Space Group Name
Not Available 0
Space Group Number
Not Available 0
Facts
0
Interesting Facts
  • Curium metal does not occur free in nature.
  • Curium metal is a synthetically produced metal.
0
Sources
Bombarding Plutonium with Helium Ions 0
History
0
Who Discovered
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso 0
Discovery
In 1944 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
  • Curium metal is used to provide power to electrical equipment for space missions.
0
Industrial Uses
NA 0
Medical Uses
NA 0
Other Uses
Research Purposes 0
Biological Properties
0
Toxicity
Unknown 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
1,340.00 °C 34
Boiling Point
3,110.00 °C 30
Appearance
0
Physical State
Solid 0
Color
Silver 0
Luster
Metallic 0
Hardness
0
Mohs Hardness
Not Available 0
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
Cm 0
Isotopes
0
Known Isotopes
15 24
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
581.00 kJ/mol 62
2nd Energy Level
1,196.00 kJ/mol 61
3rd Energy Level
2,026.00 kJ/mol 72
4th Energy Level
3,550.00 kJ/mol 54
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
3.07 g/amp-hr 16
Electron Work Function
Not Available 0
Other Chemical Properties
Ionization, Radioactive Isotopes 0
Atomic
0
Atomic Number
96 22
Electron Configuration
[Rn] 5f7 6d1 7s2 0
Crystal Structure
Double Hexagonal Close Packed (DHCP) 0
Crystal Lattice
DHCP-Crystal-Structure-of-Curium.jpg#100 0
Atom
0
Number of Protons
96 22
Number of Neutrons
151 10
Number of Electrons
96 22
Radius of an Atom
0
Atomic Radius
174.00 pm 20
Covalent Radius
169.00 pm 26
Van der Waals Radius
200.00 pm 28
Atomic Weight
247.00 amu 18
Atomic Volume
18.28 cm3/mol 26
Adjacent Atomic Numbers
0
Previous Element
55 0
Next Element
86 0
Valence Electron Potential
44.50 (-eV) 38
Lattice Constant
Not Available 0
Lattice Angles
NA 0
Lattice C/A Ratio
Not Available 0
Mechanical
0
Density
0
Density At Room Temperature
13.51 g/cm3 25
Density When Liquid (at m.p.)
13.85 g/cm3 10
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
Unknown 0
Magnetic
0
Magnetic Characteristics
0
Specific Gravity
13.51 17
Magnetic Ordering
Antiferromagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Electrical Properties
0
Electrical Property
Unknown 0
Resistivity
1.25 nΩ·m 58
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
15.00 kJ/mol 21
Enthalpy of Atomization
Not Available 0
Standard Molar Entropy
Not Available 0
Summary >>
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