Meaning of atomic number 9 in English

Table of contents
  1. Pronunciation
  2. Noun
    1. Definitions

  1. Pronunciation

    US accent

    UK accent

  1. Noun

    atomic number 9

    Definitions

    1. a nonmetallic univalent element belonging to the halogens

    Examples

    • « usually a yellow irritating toxic flammable gas »
    • « a powerful oxidizing agent »
    • « recovered from fluorite or cryolite or fluorapatite »

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