pinkaylla pinkaylla

09-11-2014
Chemistry

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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

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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