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To find the atomic mass of an element that is included on a periodic table, what must be found first? A. The number of protons in that element. B. The number of electrons in that element. C.The number of neutrons in that element. D.The average mass of all the isotopes.

Respuesta :

Eduard22sly

Answer: D the average mass of all the isotopes

Explanation:

Awesomeness360

Answer:

To find the atomic mass of an element that is included on a periodic table, what must be found first? The average mass of all the isotopes.

Explanation:

Option D is correct.

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