Hydrogen - Atomic Number 1, Helium - Atomic Number 2, Lithium - Atomic Number 3, Beryllium  - Atomic Number 4, Boron - Atomic Number 5, Carbon - Atomic Number 6, Nitrogen - Atomic Number 7, Oxygen - Atomic Number 8, Fluorine - Atomic Number 9, Neon - Atomic Number 10,

Atomic Number -- 1st 10 Elements

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