What does an atomic number represent in an atom? 1. number of protons 2. number of electrons. 3. number of neutrons. 4. number of protrond and neutrons

4: The mass amount of protons and neutrons in an atom

We just covered this in my chem class

its number 1 the number of protons if able u should try one and two

c.

explanation:

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.