Tin Curium Comparison
Periodic Table
Symbol
Sn
Cm
Group Number
14
4
Not Available
Period Number
5
7
Block
p block
f block
Element Family
Post-Transition
Actinide
CAS Number
7440315
99+
7440519
36
Space Group Name
I41/amd
Not Available
Space Group Number
141.00
7
Not Available
Facts
Interesting Facts
- 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.
- Curium metal does not occur free in nature.
- Curium metal is a synthetically produced metal.
Sources
Found in Minerals, Mining
Bombarding Plutonium with Helium Ions
History
Who Discovered
Unknown
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso
Discovery
Before 3500 BC
In 1944
Abundance
Abundance In Universe
4 * 10-7 %
20
Not Available
Abundance In Sun
~0.0000009 %
19
~-9999 %
Abundance In Meteorites
0.00 %
24
Not Available
Abundance In Earth's Crust
0.00 %
34
Not Available
Abundance In Oceans
0.00 %
26
Not Available
Abundance In Humans
0.00 %
13
Not Available
Uses
Uses & Benefits
- 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.
- Curium metal is used to provide power to electrical equipment for space missions.
Industrial Uses
Automobile Industry, Chemical Industry, Food Industry
NA
Medical Uses
Dentistry
NA
Other Uses
NA
Research Purposes
Biological Properties
Toxicity
Non Toxic
Unknown
Present in Human Body
Yes
No
In Blood
0.38 Blood/mg dm-3
10
0.00 Blood/mg dm-3
37
In Bone
1.40 p.p.m.
16
0.00 p.p.m.
36
Physical Properties
Melting Point
231.90 °C
99+
1,340.00 °C
34
Boiling Point
2,270.00 °C
99+
3,110.00 °C
30
Appearance
Physical State
Solid
Solid
Color
Silvery White
Silver
Luster
NA
Metallic
Hardness
Mohs Hardness
1.50
18
Not Available
Brinell Hardness
50.00 MPa
99+
Not Available
Speed of Sound
2,730.00 m/s
32
Not Available
Optical Properties
Allotropes
Yes
No
α Allotropes
Grey Tin (alpha Tin, Tin Pest)
Not Available
β Allotropes
White Tin (Beta Tin)
Not Available
γ Allotropes
Rhombic Tin (gamma Tin)
Not Available
Chemical Properties
Chemical Formula
Sn
Cm
Isotopes
Known Isotopes
35
4
15
24
Electronegativity
Pauling Electronegativity
1.96
8
1.30
32
Sanderson Electronegativity
1.49
15
Not Available
Allred Rochow Electronegativity
1.72
4
1.20
27
Mulliken-Jaffe Electronegativity
2.21
3
Not Available
Allen Electronegativity
1.82
11
Not Available
Electropositivity
Pauling Electropositivity
2.04
99+
2.70
22
Ionization Energies
1st Energy Level
708.60 kJ/mol
33
581.00 kJ/mol
99+
2nd Energy Level
1,411.80 kJ/mol
99+
1,196.00 kJ/mol
99+
3rd Energy Level
2,943.00 kJ/mol
30
2,026.00 kJ/mol
99+
4th Energy Level
3,930.30 kJ/mol
99+
3,550.00 kJ/mol
99+
5th Energy Level
7,456.00 kJ/mol
13
Not Available
Electrochemical Equivalent
1.11 g/amp-hr
99+
3.07 g/amp-hr
16
Electron Work Function
4.42 eV
16
Not Available
Other Chemical Properties
Ionization, Solubility
Ionization, Radioactive Isotopes
Atomic Properties
Atomic Number
50
99+
96
22
Electron Configuration
[Kr] 4d10 5s2 5p2
[Rn] 5f7 6d1 7s2
Crystal Structure
Tetragonal (TETR)
Double Hexagonal Close Packed (DHCP)
Crystal Lattice
TETR-Crystal-Structure-of-Tin.jpg#100
DHCP-Crystal-Structure-of-Curium.jpg#100
Atom
Number of Protons
50
99+
96
22
Number of Neutrons
69
99+
151
10
Number of Electrons
50
99+
96
22
Radius of an Atom
Atomic Radius
140.00 pm
38
174.00 pm
20
Covalent Radius
139.00 pm
99+
169.00 pm
26
Van der Waals Radius
217.00 pm
23
200.00 pm
28
Atomic Weight
118.71 amu
99+
247.00 amu
18
Atomic Volume
16.30 cm3/mol
32
18.28 cm3/mol
26
Adjacent Atomic Numbers
Valence Electron Potential
83.50 (-eV)
14
44.50 (-eV)
38
Lattice Constant
583.18 pm
7
Not Available
Lattice Angles
π/2, π/2, π/2
NA
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
7.37 g/cm3
99+
13.51 g/cm3
25
Density When Liquid (at m.p.)
6.99 g/cm3
34
13.85 g/cm3
10
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
0.00 (Pa)
17
Not Available
Elasticity properties
Shear Modulus
18.00 GPa
36
Not Available
Bulk Modulus
58.00 GPa
20
Not Available
Young's Modulus
50.00 GPa
36
Not Available
Poisson Ratio
0.36
8
Not Available
Other Mechanical Properties
Ductile, Malleable
Unknown
Magnetic Properties
Magnetic Characteristics
Specific Gravity
7.31
99+
13.51
17
Magnetic Ordering
Diamagnetic
Antiferromagnetic
Electrical Properties
Electrical Property
Superconductor
Unknown
Resistivity
115.00 nΩ·m
28
1.25 nΩ·m
99+
Electrical Conductivity
0.09 106/cm Ω
23
Not Available
Electron Affinity
107.30 kJ/mol
8
Not Available
Thermal Properties
Specific Heat
0.23 J/(kg K)
28
Not Available
Molar Heat Capacity
27.11 J/mol·K
20
Not Available
Thermal Conductivity
66.80 W/m·K
25
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
22.00 µm/(m·K)
20
Not Available
Enthalpy
Enthalpy of Vaporization
290.40 kJ/mol
32
Not Available
Enthalpy of Fusion
7.03 kJ/mol
99+
15.00 kJ/mol
21
Enthalpy of Atomization
301.30 kJ/mol
35
Not Available
Standard Molar Entropy
51.20 J/mol.K
29
Not Available
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