name the element which has no neutron

There is only one stable atom that does not have neutrons. It is an isotope of the element hydrogen called protium. Protium, which contains a single proton and a single electron, is the simplest atom. All other stable atoms contain some number of neutrons.  

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    Hydrogen
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    Hi
    Hydrogen is the only element that does not contain any neutrons in its nucleus
    THUMBS UP!
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    hydrogen
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    There is only one stable atom that does not have neutrons. It is an isotope of the element hydrogen called protium. Protium, which contains a single proton and a single electron, is the simplest atom. All other stable atoms contain some number of neutrons.  
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    One isotope of hydrogen I.E. protium do not have neutrons.
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    hydrogen has no neutron as we know
    atomic no =protons =electron 
    and the atomic no and mass of hydrogen is 1.
    neutrons=atomic mass - no. of electron
                 =1-1
                =0
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    What are you looking for?