Astatine is placed beneath iodine in Group VII of the Periodic Table. Which row shows the properties of astatine?
- Astate at room temperature: gas; reactivity: displaces chlorine, bromine and iodine
- Bstate at room temperature: gas; reactivity: displaces iodine but does not displace chlorine or bromine
- Cstate at room temperature: solid; reactivity: displaces iodine but does not displace chlorine or bromine
- Dstate at room temperature: solid; reactivity: does not displace chlorine, bromine or iodine