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does a group of atoms make an element

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    im trying to get my head around moles and I have this question:

    is an element made up of a group of 1 particular atom, when I say group, I mean there is a certain number of that particular 1 atom that makes that element exist in real life
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    You only need a single bound nucleus to call it an element.
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    (Original post by alow)
    You only need a single bound nucleus to call it an element.
    omg i just started A-levels

    what do u mean by single bound


    omg im freaking out, omg i dont get moles
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    (Original post by Frank Peters)
    omg i just started A-levels

    what do u mean by single bound


    omg im freaking out, omg i dont get moles
    A nucleus that is bound is one with a negative binding energy, i.e. it is more energetically favourable for the nucleons to be together than apart.

    http://chemistry.about.com/cs/genera...y/f/blmole.htm
 
 
 
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