The number of protons.
The amount of protons it has on it's nucleus.
An element's atomic number is determined by the amount of protons within the nucleus.
Atomic number is about protons. It determines the number of protons.
The number of protons.
The number of protons.
The atomic number is the number of protons in an atom.
The number of protons determines the element's atomic number. When combined with the number of neutrons, it determines the element's atomic mass.
Atomic Number
Yes. The number of protons is what determines atomic number.
The atomic number is equal to the number of protons in a chemical element.
atomic number
Atomic number is the number of protons in the nuclei of the atoms of an element. It is the number of protons that determines the atomic number. In a neutral atom, the number of electrons equals the number of protons. So in a way you could say that atomic number determines the number of electrons in a neutral atom.
The number of Protons in the nucleus determines the atom's Atomic number.
The atomic number, which is the number of protons in the nucleus, determines what kind of atom it is.
The number of protons.
The atomic number of an element is determined by the number of protons in its nucleus.