Thallium
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Thallium is a Group 3 metal element, on the Periodic Table, with an atomic number of 81.
About Thallium
Molecular Structure
- Thallium has the chemical symbol Tl.
- Thallium atoms join together in large numbers to form a giant metal molecule.
Atomic Structure
- Thallium as 81 protons and 123 neutrons in its nucleus giving it an Atomic Number of 81 and an atomic mass of 204.
- Thallium is in Period 6 of the Periodic Table because it has 6 electron shells.
Properties
- Thallium is a metal element so it is a good thermal conductor and a good electrical conductor.
- Thallium is a shiny solid at room temperature.
- Thallium is malleable.
- Thallium is sonorous.
- Thallium is ductile.
Key Stage 4
Meaning
Thallium is a Group 3 metal element, on the Periodic Table, with 81 protons in the nucleus.
About Thallium
Molecular Structure
- Thallium has the chemical formula Tl.
- Thallium atoms join together in a giant metallic structure.
Atomic Structure
- The most stable isotope of Thallium has 123 neutrons in its nucleus giving it an atomic mass of 204.
- Thallium is in Period 6 of the Periodic Table because it has 6 electron shells.
- Thallium loses electrons to form positive metal ions.
Properties
- Thallium forms ionic bonds with non-metals.
- Thallium is a metal element so it is a good thermal conductor and a good electrical conductor.
- Thallium is a shiny solid at standard temperature and pressure and has a high melting point.
- Thallium is malleable.
- Thallium is sonorous.
- Thallium is ductile.