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Thread ID: 57852 2005-05-14 10:02:00 Why chlorine is a gas, bromine is a liquid while Iodine is a solid? Renmoo (66) PC World Chat
Post ID Timestamp Content User
355092 2005-05-14 10:02:00 Greetings people, as the title speaks, I wanted to know why Chlorine is a gas, Bromine is a liquid while Iodine is a solid at room temperature. If possible, could you tell me what keywords should I use in Google or any other search engine? I hope Graham_L or Terry would appear.

Cheers :)
Renmoo (66)
355093 2005-05-14 10:09:00 en.wikipedia.org

Google isn't that hard to use. Why don't you try first, THEN ask.
ninja (1671)
355094 2005-05-14 10:22:00 Try "Why chlorine is a gas, bromine is a liquid while Iodine is a solid?". george12 (7)
355095 2005-05-14 10:34:00 another good example that you could put on that site james, they have real chem teachers there. :) Prescott (11)
355096 2005-05-14 11:12:00 You forgot fluorine, another of the halogen group. Try Googling "halogen". Richard (739)
355097 2005-05-14 11:45:00 another good example that you could put on that site james, they have real chem teachers there. :)
Yeah, I've just thought of looking into my bookmarks. Thanks for informing of the existence of such a wonderful website, Pres! 3 cheers!

James
Renmoo (66)
355098 2005-05-14 11:50:00 5th form chemistry? It was the devil.

Don't touch it at university.

They don't teach you about making bombs or drugs or cool stuff.
DangerousDave (697)
355099 2005-05-14 11:50:00 Not to mention the extremely exciting and elusive Astatine.

James - the simplistic answer is that they are all at different energy levels at any given temperature. Some of these halogens are less energetic than others. Just like Hydrogen and Iron.

Of course halogens are very active atoms. They do not exist in nature in a pure form, instead forming salts normally. So when you refer to solids etc, these only exist in laboratories or chemical factories.
Winston001 (3612)
355100 2005-05-14 13:09:00 Not to mention the extremely exciting and elusive Astatine.

James - the simplistic answer is that they are all at different energy levels at any given temperature. Some of these halogens are less energetic than others. Just like Hydrogen and Iron.

Of course halogens are very active atoms. They do not exist in nature in a pure form, instead forming salts normally. So when you refer to solids etc, these only exist in laboratories or chemical factories.

They all have the same energy at the same room temp. It's just that Cl is lighter and so is more volatile. Br is heavier, is a liquid, and I is heavier still, and so is a solid etc.
vinref (6194)
355101 2005-05-14 20:50:00 They all have the same energy at the same room temp. It's just that Cl is lighter and so is more volatile. Br is heavier, is a liquid, and I is heavier still, and so is a solid etc.

I think that is right, if by energy is meant a measure of temperature, though it's been 50 years since I studied chemistry.
It may be related to atomic mass/radius, fluorine is the lightest, then chlorine, then bromine, then iodine , but I'm guessing :)

www.chemsoc.org
Terry Porritt (14)
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