Actinium
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Actinium is a Actinide metal element, on the Periodic Table, with an atomic number of 89.
About Actinium
Molecular Structure
- Actinium has the chemical symbol Ac.
- Actinium atoms join together in large numbers to form a giant metal molecule.
Atomic Structure
- Actinium as 89 protons and 138 neutrons in its nucleus giving it an Atomic Number of 89 and an atomic mass of 227.
- Actinium is in Period 7 of the Periodic Table because it has 7 electron shells.
Properties
- Actinium is a metal element so it is a good thermal conductor and a good electrical conductor.
- Actinium is a shiny solid at room temperature.
- Actinium is malleable.
- Actinium is sonorous.
- Actinium is ductile.
Key Stage 4
Meaning
Actinium is a Actinide metal element, on the Periodic Table, with 89 protons in the nucleus.
About Actinium
Molecular Structure
- Actinium has the chemical formula Ac.
- Actinium atoms join together in a giant metallic structure.
Atomic Structure
- The most stable isotope of Actinium has 138 neutrons in its nucleus giving it an atomic mass of 227.
- Actinium is in Period 7 of the Periodic Table because it has 7 electron shells.
- Actinium loses electrons to form positive metal ions.
Properties
- Actinium forms ionic bonds with non-metals.
- Actinium is a metal element so it is a good thermal conductor and a good electrical conductor.
- Actinium is a shiny solid at standard temperature and pressure and has a high melting point.
- Actinium is malleable.
- Actinium is sonorous.
- Actinium is ductile.