the number of ______ is always equal to the atomic number of the element. electrons neutrons moles protons
the number of ______ is always equal to the atomic number of the element. electrons neutrons moles protons
Answer
Brief Explanations:
The atomic number of an element is defined as the number of protons in the nucleus of an atom of that element. Electrons can be lost or gained in chemical reactions, neutrons vary in isotopes, and moles are a unit of measurement not directly equal to the atomic number.
Answer:
D. protons