Symbol
Cm
  
Sn
  
Group Number
Not Available
  
Period Number
7
  
5
  
Block
f block
  
p block
  
Element Family
Actinide
  
Post-Transition
  
Space Group Name
Not Available
  
I41/amd
  
Space Group Number
Not Available
  
Interesting Facts
- Curium metal does not occur free in nature.
- Curium metal is a synthetically produced metal.
  
- In the list of most abundant element Tin is ranked 49th.
- Tin metal does not react with water as well as does not corrode in it.
  
Sources
Bombarding Plutonium with Helium Ions
  
Found in Minerals, Mining
  
History
  
  
Who Discovered
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso
  
Unknown
  
Discovery
In 1944
  
Before 3500 BC
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.0000009 %
  
19
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available
  
Abundance In Humans
Not Available
  
Uses & Benefits
- Curium metal is used to provide power to electrical equipment for space missions.
  
- Tin-niobium alloy is used for producing superconducting magnets.
-
Tin salt known as a tin II chloride, it is used as a mordant and as a reducing agent for dyeing calico and silk.
  
Industrial Uses
NA
  
Automobile Industry, Chemical Industry, Food Industry
  
Medical Uses
NA
  
Dentistry
  
Other Uses
Research Purposes
  
NA
  
Biological Properties
  
  
Toxicity
Unknown
  
Non Toxic
  
Present in Human Body
No
  
Yes
  
In Blood
0.00 Blood/mg dm-3
  
37
0.38 Blood/mg dm-3
  
10
In Bone
0.00 p.p.m.
  
36
1.40 p.p.m.
  
16
Melting Point
1,340.00 °C
  
34
Boiling Point
3,110.00 °C
  
30
2,270.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silver
  
Silvery White
  
Luster
Metallic
  
NA
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Speed of Sound
Not Available
  
2,730.00 m/s
  
32
Optical Properties
  
  
Allotropes
No
  
Yes
  
α Allotropes
Not Available
  
Grey Tin (alpha Tin, Tin Pest)
  
β Allotropes
Not Available
  
White Tin (Beta Tin)
  
γ Allotropes
Not Available
  
Rhombic Tin (gamma Tin)
  
Chemical Formula
Cm
  
Sn
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
581.00 kJ/mol
  
99+
708.60 kJ/mol
  
33
2nd Energy Level
1,196.00 kJ/mol
  
99+
1,411.80 kJ/mol
  
99+
3rd Energy Level
2,026.00 kJ/mol
  
99+
2,943.00 kJ/mol
  
30
4th Energy Level
3,550.00 kJ/mol
  
99+
3,930.30 kJ/mol
  
99+
5th Energy Level
Not Available
  
7,456.00 kJ/mol
  
13
Electrochemical Equivalent
3.07 g/amp-hr
  
16
1.11 g/amp-hr
  
99+
Electron Work Function
Not Available
  
Other Chemical Properties
Ionization, Radioactive Isotopes
  
Ionization, Solubility
  
Electron Configuration
[Rn] 5f7 6d1 7s2
  
[Kr] 4d10 5s2 5p2
  
Crystal Structure
Double Hexagonal Close Packed (DHCP)
  
Tetragonal (TETR)
  
Crystal Lattice
DHCP-Crystal-Structure-of-Curium.jpg#100
  
TETR-Crystal-Structure-of-Tin.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
118.71 amu
  
99+
Atomic Volume
18.28 cm3/mol
  
26
16.30 cm3/mol
  
32
Adjacent Atomic Numbers
  
  
Valence Electron Potential
44.50 (-eV)
  
38
83.50 (-eV)
  
14
Lattice Constant
Not Available
  
Lattice Angles
NA
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
13.51 g/cm3
  
25
7.37 g/cm3
  
99+
Density When Liquid (at m.p.)
13.85 g/cm3
  
10
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Unknown
  
Ductile, Malleable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Antiferromagnetic
  
Diamagnetic
  
Electrical Properties
  
  
Electrical Property
Unknown
  
Superconductor
  
Resistivity
115.00 nΩ·m
  
28
Electrical Conductivity
Not Available
  
0.09 10
6/cm Ω
  
23
Electron Affinity
Not Available
  
107.30 kJ/mol
  
8
Specific Heat
Not Available
  
0.23 J/(kg K)
  
28
Molar Heat Capacity
Not Available
  
27.11 J/mol·K
  
20
Thermal Conductivity
Not Available
  
66.80 W/m·K
  
25
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
Not Available
  
22.00 µm/(m·K)
  
20
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
290.40 kJ/mol
  
32
Enthalpy of Fusion
15.00 kJ/mol
  
21
7.03 kJ/mol
  
99+
Enthalpy of Atomization
Not Available
  
301.30 kJ/mol
  
35
Standard Molar Entropy
Not Available
  
51.20 J/mol.K
  
29