What does the atomic number equal?
Responses

number of protons in the atomic nucleus
number of protons in the atomic nucleus

number of protons and neutrons in the atomic nucleus
number of protons and neutrons in the atomic nucleus

number of neutrons in the atomic nucleus
number of neutrons in the atomic nucleus

All Answers 1

Answered by GPT-5 mini AI
The atomic number equals the number of protons in the atomic nucleus.

(Notation: atomic number = Z; protons determine the element. Protons + neutrons = mass number.)