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25 February, 15:05

Which subatomic particles had negligible mass and travels around outside the nucleus? A protons B neutron C electron D orbital?

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  1. 25 February, 15:14
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    C. Electron. It's a negatively charged particle that orbits around the nucleus. Usually, there are multiple electrons going around the nucleus in different orbitals (the circle around the nucleus in which the electron travels). The mass is much smaller compared to that of a proton or neutron and can be ignored when calculating the mass of an atom.
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