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The halogens (Physical properties (They are the most reactive non-metallic…
The halogens
Physical properties
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They appear as stable ions in nature NOT their elemental forms. eg Cl-, Br-.
They are usually found dissolved in sea water or combined with sodium or potassium as salts. eg. NaCl
Trends in boiling points
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Group 7 has elements in all pysical states. Solid, liquid and gas
The boiling point increases as you go down the group due to the increase in number of electrons which increases the strengh of the induced dipole dipole interactions leading to the amount of energy needed to break the forces increases increasing the boiling point.
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