atomic number

Noun
  1. 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 (synset 113619958)
    is a type of: number - a concept of quantity involving zero and units
    subtypes: magic number - the atomic number of an extra stable strongly bound atomic nucleus: 2, 8, 20, 28, 50, 82 or 126

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