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This chemical element has atomic number 2.

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Your new ahaHelium

Helium has 2 protons in every atomic nucleus. Changing that number would make a different element. Source: Helium ↗

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More from Atomic Numbers and Elements

A few more worth knowing.

  1. 03This chemical element has atomic number 3.RECALL
    Lithium

    Symbol Li

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  2. 04This chemical element has atomic number 4.RECALL
    Beryllium

    Symbol Be

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  3. 05This chemical element has atomic number 5.RECALL
    Boron

    Symbol B

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