Chemistry, 10.10.2019 19:30, cdradlet2001

To find the atomic mass of a particular atom you need to know
a. the number of protons.
b. the number of neutrons.
c. the number of protons and neutrons.
d. simply what element the atom belongs to.

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To find the atomic mass of a particular atom you need to know
a. the number of protons.
...