Question

Given an element’s atomic number and mass number, how can you tell the number of protons and neutrons in its nucleus?


Number of protons = mass number; number of neutrons = atomic number – mass number

Number of protons = atomic number; number of neutrons = mass number + atomic number

Number of protons = atomic number; number of neutrons = mass number – atomic number

Answer 1

Number of protons = atomic number; number of neutrons = mass number - atomic number