Question

PLEASE HELP!

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.

Answer 1

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.

Step-by-step explanation:

Option D is correct.

Answer 2

Answer: D the average mass of all the isotopes

Step-by-step explanation: