Chemistry

Chemistry, 01.10.2019 06:00, skiddymark3ox93za

Which of these subatomic particles adds the most mass to an atom?
a. proton
b. photon
c. electron
d. it depends on what the element is.
an atom with two protons, three neutrons and two electrons would have a mass of about how many atomic mass units?
a. 2
b. 3
c. 5
d. 7

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Which of these subatomic particles adds the most mass to an atom?
a. proton
b. photon

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