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What is Polonium?
Polonium


Periodic Table
0
Symbol
Po 0
Group Number
16 2
Period Number
6 2
Block
p block 0
Element Family
Post-​Transition 0
CAS Number
7440086 71
Space Group Name
Pm-3m 0
Space Group Number
221.00 3
Facts
0
Interesting Facts
  • 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.
0
Sources
Mining, Ores of metals 0
History
0
Who Discovered
Pierre Curie and Marie Curie 0
Discovery
In 1898 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
0.00 % 46
Abundance In Humans
Not Available 0
Uses
0
Uses & Benefits
  • 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.
0
Industrial Uses
Aerospace Industry, Ammunition Industry 0
Medical Uses
NA 0
Other Uses
Alloys 0
Biological Properties
0
Toxicity
Highly Toxic 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
254.00 °C 71
Boiling Point
962.00 °C 69
Appearance
0
Physical State
Solid 0
Color
Silver 0
Luster
NA 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
Yes 0
α Allotropes
α-polonium 0
β Allotropes
β-polonium 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Po 0
Isotopes
0
Known Isotopes
29 10
Electronegativity
0
Pauling Electronegativity
2.00 7
Sanderson Electronegativity
Not Available 0
Allred Rochow Electronegativity
1.76 2
Mulliken-Jaffe Electronegativity
2.48 1
Allen Electronegativity
2.19 2
Electropositivity
0
Pauling Electropositivity
2.00 46
Ionization Energies
0
1st Energy Level
812.10 kJ/mol 14
2nd Energy Level
Not Available 0
3rd Energy Level
Not Available 0
4th Energy Level
Not Available 0
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
3.90 g/amp-hr 8
Electron Work Function
Not Available 0
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility 0
Atomic
0
Atomic Number
84 32
Electron Configuration
[Xe] 4f14 5d10 6s2 6p4 0
Crystal Structure
Monoclinic (MON) 0
Crystal Lattice
MON-Crystal-Structure-of-Polonium.jpg#100 0
Atom
0
Number of Protons
84 32
Number of Neutrons
125 19
Number of Electrons
84 32
Radius of an Atom
0
Atomic Radius
168.00 pm 23
Covalent Radius
140.00 pm 44
Van der Waals Radius
197.00 pm 29
Atomic Weight
209.00 amu 28
Atomic Volume
22.23 cm3/mol 13
Adjacent Atomic Numbers
0
Previous Element
23 0
Next Element
47 0
Valence Electron Potential
Not Available 100
Lattice Constant
335.90 pm 48
Lattice Angles
π/2, π/2, π/2 0
Lattice C/A Ratio
Not Available 0
Mechanical
0
Density
0
Density At Room Temperature
9.20 g/cm3 41
Density When Liquid (at m.p.)
9.40 g/cm3 19
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
NA 0
Magnetic
0
Magnetic Characteristics
0
Specific Gravity
9.32 31
Magnetic Ordering
Nonmagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Electrical Properties
0
Electrical Property
Conductor 0
Resistivity
0.40 nΩ·m 67
Electrical Conductivity
0.02 106/cm Ω 44
Electron Affinity
183.30 kJ/mol 3
Thermal
0
Specific Heat
0.12 J/(kg K) 40
Molar Heat Capacity
26.40 J/mol·K 28
Thermal Conductivity
20.00 W/m·K 44
Critical Temperature
Not Available 0
Thermal Expansion
23.50 µm/(m·K) 16
Enthalpy
0
Enthalpy of Vaporization
60.30 kJ/mol 58
Enthalpy of Fusion
13.00 kJ/mol 26
Enthalpy of Atomization
134.00 kJ/mol 54
Standard Molar Entropy
Not Available 0
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