atomic number

Noun

Meaning

the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element

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Examples

After 1932, therefore, an element's atomic number Z was also realized to be identical to the proton number of its nuclei. Source: Internet

Click here for more information. main infobox Actinium is a radioactive chemical element with symbol Ac (not to be confused with the abbreviation for an acetyl group ) and atomic number 89, which was discovered in 1899. Source: Internet

An atom's electronegativity is affected by both its atomic number and the distance at which its valence electrons reside from the charged nucleus. Source: Internet

An atom's electronegativity is affected by both its atomic number and the distance between the valence electrons and the nucleus. Source: Internet

At the other end of the periodic table, a nucleus of gold with a mass 197 times that of hydrogen, was thought to contain 118 nuclear electrons in the nucleus to give it a residual charge of + 79, consistent with its atomic number. Source: Internet

As the atomic number Z increases, so too does the number of potential Auger transitions. Source: Internet

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