Hydrogen - H, Lithium - Li, Sodium - Na, Potassium - K, Beryllium - Be, Magnesium - Mg, Calcium - Ca, Boron - B, Aluminium - Al , Carbon - C, Silicon - Si, Nitrogen - N, Phosphorus - P, Oxygen - O, Sulphur - S, Fluorine - F, Chlorine - Cl, Helium - He, Neon - Ne, Argon - Ar,

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