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Which gas has properties that are most similar to those of an ideal gas?
Wiki User
∙ 8y ago
An ideal gas is one in which each atom has no influence on its neighbors. So it would not liquify or solidify, because that would require some attractive force that one would exert on the other. So the real gas that most resembles an ideal gas is the one that is hardest to liquify, and that would be helium, which doesn't liquify at atmospheric pressure until you get it down to 4.2 degrees C from absolute zero (in other words, to 4.2 degrees Kelvin). No other gas has such a low boiling point.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoshort answer: helium
Explanation: see below
an ideal gas in which each atom has no influence on its neighbors, so it would not liquify or solidify.
so the real gas that most resembles an ideal gas is helium, which doesn't liquify until about 4 degrees celsius from absolute zero. (no other gas has such a low boiling point)
helium atoms also have minimal intermolecular forces/interactions because 1) there are no ionic forces, 2) no hydrogen bonding, and 3) given the small number of electrons on each atom, even london-dispersion forces are quite weak--2nd only to hydrogen (if H was judged solely on its london-dispersion abilities, but H is a special molecule...)
Wiki User
∙ 8y ago3. He
Wiki User
∙ 13y agoHelium.
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