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chem doubt

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AN10:
Which of the following would behave most like an ideal gas at room temperature?
A carbon dioxide
B helium
C hydrogen
D nitrogen

Y helium y not hydrogen?

CHEMMASTER6000:
first , argon exist as an atom so it does not have bonds

second helium has a full octet structure so there are no intermolecular bonding

AN10:

--- Quote from: CHEMMASTER6000 on June 08, 2010, 02:42:21 pm ---first , argon exist as an atom so it does not have bonds

second helium has a full octet structure so there are no intermolecular bonding

--- End quote ---

ok Thanks :)...i got da frst 1 so i deleted it!

Chingoo:
You cannot say helium has NO intermolecular forces; intermolecular forces don't depend on electronic configuration as such. It is monoatomic, however, and is inert. It is not polar because it consists of single atoms alone and hence is less polarizable. Hydrogen is diatomic and has the same number of electrons (the complete molecule) as compared to a He, and due to its ability to be polarized (two atoms present), it's less ideal than Helium.

AN10:
Finally someone gave me a good explanation to this question....asked so many ppl but nobody could answer it well....so THANKS!

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