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  1. proton and neutron are about the same. Smaller is the electron, and even smaller is the neutrino.

    4 Answers · Science & Mathematics · 18/03/2013

  2. ... the nucleus of the atom, which is the majority of its mass . Electrons ( the particles orbiting the nucleus) are so small that they are not... have mass as well, but ...

    3 Answers · Science & Mathematics · 04/12/2008

  3. neutrons, because the protons and electrons are always equal, except for in ions

    8 Answers · Science & Mathematics · 21/01/2008

  4. C- Electron Protons and Neutrons have about the same mass

    2 Answers · Science & Mathematics · 19/02/2010

  5. ..., electrons have such a small mass that they are not ...when calculating the weight of an atom. So... are the two subatomic particles that contribute to the weight of...

    6 Answers · Science & Mathematics · 05/02/2009

  6. ... since the are all subatomic particles . A neutron has a mass of approximately 1, while... ( which are either... which is much smaller than a neutron or proton...

    3 Answers · Science & Mathematics · 06/06/2010

  7. ... have mass but their mass is tiny even by the standards of subatomic particles . It is so small that it has never been ...electromagnetism, and gravity, which is relatively weak...

    2 Answers · Science & Mathematics · 18/12/2012

  8. Electrons have virtually no atomic mass , therefore they are the smallest . (yes it's C)

    5 Answers · Science & Mathematics · 24/02/2011

  9. Electron because it is incredibly small . like 1840 times smaller than proton. and it travels around the proton. Nucleus is made of proton and neutron and electron travels around it. hope that helps.

    2 Answers · Science & Mathematics · 18/09/2012

  10. ...beam at some foil and the particles came back 180degrees. At the time, it was ... just like a mass of jelly, so the onlything... sense was to have a small , dense core and a shell of...

    4 Answers · Science & Mathematics · 23/02/2011

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