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Strontium · chemical symbol

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Your new ahaSr

Strontium has 38 protons in every atomic nucleus. Changing that number would make a different element. Source: Strontium ↗

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  1. 39Yttrium · chemical symbolRECALL
    Y

    Atomic number 39

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  2. 40Zirconium · chemical symbolRECALL
    Zr

    Atomic number 40

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  3. 41Niobium · chemical symbolRECALL
    Nb

    Atomic number 41

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