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pinkaylla pinkaylla
  • 09-11-2014
  • Chemistry
Answered

what two particles account for almost all of the mass of an atom?

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jserene01 jserene01
  • 09-11-2014

The two particles that account for the mass of an atom are protons and neutrons. Electrons on the other hand are negligible mass, and so light they are considered without weight.

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soysauce
soysauce soysauce
  • 09-11-2014

Protons and neutrons have an atomic mass unit (amu) weight of 1 while electrons are so light they are considered weightless.

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