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This chemical element has atomic number 27.

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Your new ahaCobalt

Cobalt has 27 protons in every atomic nucleus. Changing that number would make a different element. Source: Cobalt

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  1. 28This chemical element has atomic number 28.RECALL
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    Symbol Ni

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  2. 29This chemical element has atomic number 29.RECALL
    Copper

    Symbol Cu

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  3. 30This chemical element has atomic number 30.RECALL
    Zinc

    Symbol Zn

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