An atomic number stands for the number of . neutrons in the nucleus of an atom protons in the nucleus of an atom valence electrons in an atom protons plus neutrons in the nucleus of an atom

atoms or electrons

Explanation:

but l guess electrons is the best answer

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .