Astatine
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Astatine is a Group 7 metalloid element, on the Periodic Table, with an atomic number of 85.
About Astatine
- Astatine has the chemical symbol At.
Atomic Structure
- Astatine as 85 protons and 125 neutrons in its nucleus giving it an Atomic Number of 85 and an atomic mass of 210.
- Astatine is in Period 6 of the Periodic Table because it has 6 electron shells.
Properties
- Astatine is the least reactive Halogen.
- Astatine is a mild bleaching agent.
- Astatine kills bacteria.
- Astatine is a purple solid at room temperature.
- Astatine is a shiny solid at room temperature.
Key Stage 4
Meaning
Astatine is a Group 7 metalloid element, on the Periodic Table, with 85 protons in the nucleus.
About Astatine
- Astatine has the chemical symbol At.
Atomic Structure
- The most stable isotope of Astatine has 125 neutrons in its nucleus giving it an atomic mass of 210.
- Astatine is in Period 6 of the Periodic Table because it has 6 electron shells.
Properties
- Astatine is a metalloid element so in some conditions it is an electrical conductor.
- Astatine is the least reactive Halogen.
- Astatine is a mild bleaching agent.
- Astatine kills bacteria.
- Astatine is a shiny solid at standard temperature and pressure and has a high melting point.