What Is the Definition of Atomic Number?


The atomic number is the number of protons in the nucleus of an atom. It is unique for each element and is usually designated by a subscript to the left of the elemental symbol.
Q&A Related to "What Is the Definition of Atomic Number"
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atomic number - the number of protons within an atom's nucleus. Thanks for
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Ask.com Answer for: what is the definition of atomic number
atomic number
the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus. Abbreviation: at. no.; Symbol: Z
Source: Dictionary.com
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