This is determined by the number of protons in a atom. e.g. carbon has an atomic number of 6 because it has 6 protons.
Neutrons are irrelevant to atomic number. For instance:
Hydrogen has 1 proton, NO neutrons and has atomic number 1, its isotope Deuterium has 1 proton, ONE neutron and also has atomic number 1.
The atomic number of an element is determined by the number of protons within it's nucleus.
The atomic number of an atom is determined by the number of protons it has.
Atomic masses are determined by mass spectrometry. The atomic number is identic with the number of protons in the atom - depends on position in the periodic table.
Protons
The number of protons in each element is determined by the atomic number of the element. The atomic number corresponds to the number of protons in the nucleus of an atom. This number is unique to each element and is determined by the arrangement of electrons and protons in the atom.
By subtracting the atomic mass and atomic number
The identity of an element is determined by the number of protons in the nuclei of its atoms. This is the atomic number of an element.
the atomic number is determined by the number of protons in a nucleus.
The atomic number of an element is determined by the number of protons in the nucleus.
Atomic number.
The Atomic Number
The atomic number is determined by how many protons are in the atom's nucleus.