The number of protons in the nucleus of an atom is known as the atomic number, which determines the chemical element, essentially different numbers of protons mean change the element you are looking at and hence the properties and reactions of that element.
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atomic number
It determines its identity
properties
The atomic number of an atom is determined by the number of protons it has.
Atomic mass is determined by the number of protons and neutrons in an atom's nucleus.
Protons
The Atomic Number
Atomic number.
The number of protons in the nucleus of the atom.
The number of protons in an atom's nucleus determines its chemical identity.
Check the atomic number, it will always be the same as the number of protons.
Atomic Mass is the number of protons in an atom plus the number of neutrons in the same atom.
20. the mass of an atom is determined by the sum of the number of neutrons and protons the atom has.
Atomic mass.
the number of protons in an atom and the number of electrons in an atom