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Atomic number Definition and Explanation PDF | Download eBooks

Learn Atomic number definition in biology with explanation to study “What is Atomic number”. Study atomic number explanation with biology terms to review biology course for online degree programs.

Atomic number Definition:

  • Number of protons, which is unique to an element is called the atomic number.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson

Atomic number Explanation:

The atomic number or proton number, denoted by the symbol Z, of a chemical element is the number of protons found in the nucleus of an atom. It is identical to the charge number of the nucleus. The atomic number uniquely identifies a chemical element. In an uncharged atom, the atomic number is also equal to the number of electrons. The sum of the atomic number Z and the number of neutrons, N, gives the mass number A of an atom.

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