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Thread: intra atomic space

  1. #1 intra atomic space 
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    Most of the mass of an atom is concentrated in the nucleus at the centre. The electrons revolve around the nucleus in orbits. What is the rest of atom.Is it vaccuum or empty space?


    Last edited by parag1973; November 24th, 2011 at 09:51 AM.
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  3. #2  
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    Were you asking a question?


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  4. #3  
    Geo
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    Empty space at times, an electron at others.


    It's a bizarre world indeed.
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  5. #4  
    Moderator Moderator Markus Hanke's Avatar
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    An atom is not a "classical" system as in a planet orbiting a star for example. In a classical system the positions of objects are well defined, i.e. at any given time we can tell exactly where the star is, and where the planets are. Within an atom on the other hand quantum effects become significant - we can only tell the probability of where the nucleus and the electrons are at any given time. Therefore, as Geo notes above, a given point within the atom may be occupied by an electron, the nucleus, or vacuum, each with a certain probability.
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  6. #5  
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    Quote Originally Posted by Markus Hanke View Post
    Within an atom on the other hand quantum effects become significant - we can only tell the probability of where the nucleus and the electrons are at any given time.
    This picture of an atom, or molecule, is particularly prevalent in chemistry where electrons are depicted as a cloud, the density of which at a particular point is related to the probability of finding an electron at that point. Typical depictions of such clouds are given here: Electron Cloud Model
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