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Krypton · chemical symbol

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Krypton has 36 protons in every atomic nucleus. Changing that number would make a different element. Source: Krypton ↗

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  1. 37Rubidium · chemical symbolRECALL
    Rb

    Atomic number 37

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  2. 38Strontium · chemical symbolRECALL
    Sr

    Atomic number 38

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  3. 39Yttrium · chemical symbolRECALL
    Y

    Atomic number 39

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