Astatine element has 85 protons, 125 neutrons and 85 electrons.
Astatine is a radioactive solid metal at room temperature.
The melting point of Astatine metal is 302 ̊C.
Astatine cation is At+, anion is At-1 (astatide).
» Common Astatine compounds:
• Astatine Monoiodide, AtI
• Astatine Monochloride, AtCl
• Astatine Monobromide, AtBr
• Magnesium Astatide, MgAt2
• Calcium Astatide, CaAt2