First Elements of the Periodic Table
Chemistry   Wikipedia  
The first 20 Elements of the Periodic Table: Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Sodium, Magnesium, Aluminium, Silicon, Phosphorus, Sulphur, Chlorine, Argon, Potassium, Calcium.

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"H.HeLi, B.BCNOF and NeNa MgAl SiPS ClArKCa"

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