they can distinguish one element from another becasue by the protons and the nuetrons , they can over come almost anything.
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It is the number of protons in the nucleus of an atom. It defines what element the atom is.
The atomic number is the number of protons in an atom, and each element has a unique atomic number. This means that the atomic number is used to identify and distinguish one element from another. The number of protons in an atom determines its chemical properties and its placement on the periodic table.
The atomic number is equal to the number of protons in the atomic nucleus. It is an individual characteristic.
Each element has its own specific atom number because that's what they differ in: the number of protons (from 1 up to over 100)
Atomic numbers represent the number of protons in an atom's nucleus. It also defines the element, as each element has a unique atomic number.