That is atomic number.Mass number can be similar
The atomic number or z number or the number of protons is what makes one atom different from another. The atomic number or z number or the number of protons is what makes one atom different from another.
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
One element differs from another element by the number of protons in their atoms. The number of protons in the atom is known as the atomic number. Also one isotope of an element differs from another isotope of the same element by the number of neutrons in their atoms.
The number of protons.
Elements are pure substances that cannot be broken down by chemical means. The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
the number of electrons can be different; it makes the element become an ion.
isotopes
Chemical combination, Atom arrangement Different types of atom present air pressure, temperature heat, Area where they are found, etc
they contain a large number of oxygen atom..
uhm... you might want to reword your question it makes no sense
Its protons. The atom changes depending on how many protons it has. See also atomic number.