Respuesta :

ArianwynG
The atomic number gives you the amount of protons so you when looking at the mass of an element you subtract the amount of protons and you get the amount of neutrons.
kimmykoloane

Answer:

electrons

Explanation:

the atomic number tells you the number of Drotons in one atom of an element.It also tells you the number of electrons in a neutral atom of that element. The atomic number gives the "identity" of an element as well as its location on the periodic table.

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