Question

What determines the atomic number of an atom?

A. the number of neutrons in two atoms of an element

B. the number of electrons in the outer layer of any atom

C. the number of protons in every atom of an element

D. the number of protons plus the number of neutrons in an atom

Answer 1

C!

Answer 2

C.

[atomic mass is protons + neutrons]

Answer 3

The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how many protons are in one atom of that element.

Answer 4

Medal?
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