Theresab2021
20.09.2020 •
Chemistry
What sub-atomic particles make up the majority of the atomic mass (amu) of an atom?
b
protons & neutrons
electrons & protons
neutrons & electrons
С
Solved
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Ответ:
b. protons and neutrons
Explanation:
neutrons and protons constitute almost all of an atom's mass. The third type of stable particle is the electrons. Electrons have a negative charge but are extremely small and have a mass only 1/1850 that of a proton or neutron. They are so small that for practical purposes they do not contribute to the mass of the atom.
Ответ:
it could be an electron