Question

What does the atomic number of an element represent? Question 21 options: A. the number of protons in an atom B. the number of neutrons in an atom the mass of an atom C. the total number of protons, neutrons, and electrons in an atom D. the order in which the element was discovered

Answer 1

A. the number of protons in an atom

Step-by-step explanation:

Answer 2

A. the number of protons in an atom

Step-by-step explanation:

The atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom.