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This chemical element has atomic number 37.

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Your new ahaRubidium

Rubidium has 37 protons in every atomic nucleus. Changing that number would make a different element. Source: Rubidium ↗

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  1. 38This chemical element has atomic number 38.RECALL
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    Symbol Sr

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    Symbol Y

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  3. 40This chemical element has atomic number 40.RECALL
    Zirconium

    Symbol Zr

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