Symbol
Sn
  
Po
  
Period Number
5
  
6
  
Block
p block
  
p block
  
Element Family
Post-Transition
  
Post-Transition
  
Space Group Name
I41/amd
  
Pm-3m
  
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.
  
- Polonium was the first radioactive element to be discovered.
- Polonium element and its compounds are highly radioactive.
- Its alloy with Beryllium provides source of neutrons.
  
Sources
Found in Minerals, Mining
  
Mining, Ores of metals
  
History
  
  
Who Discovered
Unknown
  
Pierre Curie and Marie Curie
  
Discovery
Before 3500 BC
  
In 1898
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~0.0000009 %
  
19
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Humans
Not Available
  
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.
  
- Polonium metal has different Allotropes, it is used in antistatic devices and for research purpose.
- A 1 gram of Polonium can reach a temperature of 500°C, hence it is used as a heat source for space equipment.
  
Industrial Uses
Automobile Industry, Chemical Industry, Food Industry
  
Aerospace Industry, Ammunition Industry
  
Medical Uses
Dentistry
  
NA
  
Other Uses
NA
  
Alloys
  
Biological Properties
  
  
Toxicity
Non Toxic
  
Highly Toxic
  
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
Boiling Point
2,270.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
Silver
  
Luster
NA
  
NA
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Speed of Sound
2,730.00 m/s
  
32
Not Available
  
Optical Properties
  
  
Allotropes
Yes
  
Yes
  
α Allotropes
Grey Tin (alpha Tin, Tin Pest)
  
α-polonium
  
β Allotropes
White Tin (Beta Tin)
  
β-polonium
  
γ Allotropes
Rhombic Tin (gamma Tin)
  
Not Available
  
Chemical Formula
Sn
  
Po
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
708.60 kJ/mol
  
33
812.10 kJ/mol
  
14
2nd Energy Level
1,411.80 kJ/mol
  
99+
Not Available
  
3rd Energy Level
2,943.00 kJ/mol
  
30
Not Available
  
4th Energy Level
3,930.30 kJ/mol
  
99+
Not Available
  
5th Energy Level
7,456.00 kJ/mol
  
13
Not Available
  
Electrochemical Equivalent
1.11 g/amp-hr
  
99+
3.90 g/amp-hr
  
8
Electron Work Function
Not Available
  
Other Chemical Properties
Ionization, Solubility
  
Ionization, Radioactive Isotopes, Solubility
  
Electron Configuration
[Kr] 4d10 5s2 5p2
  
[Xe] 4f14 5d10 6s2 6p4
  
Crystal Structure
Tetragonal (TETR)
  
Monoclinic (MON)
  
Crystal Lattice
TETR-Crystal-Structure-of-Tin.jpg#100
  
MON-Crystal-Structure-of-Polonium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
118.71 amu
  
99+
Atomic Volume
16.30 cm3/mol
  
32
22.23 cm3/mol
  
13
Adjacent Atomic Numbers
  
  
Valence Electron Potential
83.50 (-eV)
  
14
Not Available
  
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
7.37 g/cm3
  
99+
9.20 g/cm3
  
99+
Density When Liquid (at m.p.)
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
Ductile, Malleable
  
NA
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Nonmagnetic
  
Electrical Properties
  
  
Electrical Property
Superconductor
  
Conductor
  
Resistivity
115.00 nΩ·m
  
28
Electrical Conductivity
0.09 106/cm Ω
  
23
0.02 106/cm Ω
  
99+
Electron Affinity
107.30 kJ/mol
  
8
183.30 kJ/mol
  
3
Specific Heat
0.23 J/(kg K)
  
28
0.12 J/(kg K)
  
40
Molar Heat Capacity
27.11 J/mol·K
  
20
26.40 J/mol·K
  
28
Thermal Conductivity
66.80 W/m·K
  
25
20.00 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
22.00 µm/(m·K)
  
20
23.50 µm/(m·K)
  
16
Enthalpy
  
  
Enthalpy of Vaporization
290.40 kJ/mol
  
32
60.30 kJ/mol
  
99+
Enthalpy of Fusion
7.03 kJ/mol
  
99+
13.00 kJ/mol
  
26
Enthalpy of Atomization
301.30 kJ/mol
  
35
134.00 kJ/mol
  
99+
Standard Molar Entropy
51.20 J/mol.K
  
29
Not Available