Zusammenfassung der Ressource
Halogens
- Name,Symbol
- Fluorine F
- Pale yellow
poisonous gas.
F2
- Chlorine Cl
- Green poisonous
gas. Cl2
- Bromine Br
- Dark orange-red
poisonous liquid that
easily vaporises. Br2
- Iodine I
- A dark grey solid
which on heating
becomes a purple
gas. I 2
- When halogen elements form
compounds fluoride, bromine
becomes bromide, and the ion
always has a charge of 1-.
- Fluorine is the most reactive Group 7
elements, then chlorine, bromine, and
finally iodine which is least reactive.