PRINCIPALQUANTUMNUMBER

Principal quantum number

The principal quantum number, symbolized as n, is the first of a set of quantum numbers of an atomic orbital. The principal quantum number can only have positive integer values. As n increases, the orbital becomes larger and the electron spends more time farther from the nucleus. As n increases, the electron is also at a higher potential energy and is therefore less tightly bound to the nucleus. This is the only quantum number introduced by the Bohr model.

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principal quantum number

Noun

  1. The quantum number (of an atomic orbital) that specifies the energy of an electron in an atom and, hence, which shell it occupies


The above text is a snippet from Wiktionary: principal quantum number
and as such is available under the Creative Commons Attribution/Share-Alike License.

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