On this page I'll provide comprehensive data for Thallium. I hope you profit from it.
Thallium Overview
Name Origin
Greek: thallos (green twig), for a bright green line in its spectrum.
Symbol
Tl (Thallium)Description
Soft gray metal that looks like lead.
Discovery
Discovered By: Sir William Crookes
Year: 1861
Location: England
Sources
Found in iron pyrites. Also in crookesite, hutchinsonite and lorandite. Most is recovered from the byproducts of lead and zinc refining.
Uses
Its compounds are used in rat and ant poisons. Also for detecting infrared radiation.
State at 20 °C
solid
Group
Group Name: MetalÂ
Group in periodic table: 3a
Period in periodic table:Â 6
Atomic Number
81Learn more about the atomic number.
Atomic Mass
204,3833
Learn more about the atomic mass.
Stable Isotopes
Tl203percent abundance: 29.524% Tl205 percent abundance: 70.476%
Learn more about stable isotopes.
Radioactive Isotopes
Tl200-202, Tl204
Learn more about radioactive isotopes.
Atomic Structure
Crystalline Structure
Hexagonal
Learn more about crystalline structure
Shells
Electrons per energy level: 2,8,18,32,18,3
Learn more about electron shells
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4 s2 3 d10 4 p6 5 s2 4 d10 5 p6 6 s2 5 d10 4 f14 6 p1
Learn more about electron configuration.
Abbreviated Configuration
[Xe] 4f14 5d10 6s2 6p1
Learn more about abbreviated electron configuration.
Valence Electrons
1,3
Learn more about valence electrons
Atom Size
Atomic Radius
2.08 Ã…
Learn more about atomic radius.
Covalent Radius
1.48 Ã…
Learn more about covalent radius.
Ionic Radius
1.59 (+1) Ã…
Learn more about ionic radius.
Molar Volume
17.2 cm³/mol
Learn more about molar volume.
Chemical Properties
Common Oxidation States
First Ionization Energy
First Ionization Potential
Second Ionization Potential
Third Ionization Potential
Physical Properties
Density
Electrical Conductivity
Thermal Conductivity
Elastic Modulus
Coefficient of Thermal Expansion
Learn more about coefficient of thermal expansion.
Heat Properties
Other heat related physical properties:
Melting Point
Boiling Point
Specific Heat
0.13 J/gK
Learn more about specific heat.
Learn more about specific heat.
Heat of Fusion
4.142 kJ/mol
Learn more about heat of fusion.
Heat of Vaporization
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Along with basic element information, it also comes with color coded info about: State (Gas, Liquid or Solid at room temperature), Groups/series details and much more...
How about an incentive to share this post? (You will help other colleagues find this blog)
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