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Meaning of atomic number 9 in English

  1. Pronunciation

    US accent

    How to pronounce atomic number 9 in American English, in context ▾
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    How to pronounce atomic number 9 in British English, in context ▾
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  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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