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Group VII: The Halogens (five members of the halogen family (Bromine Br …
Group VII: The Halogens
trends in their physical properties as they go down the group
boiling points increase
colours get darker
reactivity decreases
five members of the halogen family
Bromine
Br
Appearance: Dark red liquid
Chlorine
Cl
Appearance: Green gas
Iodine
I
Appearance: Black solid
Astatine
At
Appearance: Radioactive, very rare
Fluorine
F
Appearance: Yellow Gas
product formed when halogen reacts with iron wool
Chlorine
Iron (III) chloride
Bromine
Iron (III) bromide
Fluorine
-Iron (III) fluoride
Iodine
Iron (III) iodide
similarities
-exists as diatomic molecules (two atoms in each molecule)
-more reactive than most non-metals
-poisonous non-metals that form coloured gas