Potassium, Phosphorus, Iron, Nickel, Chlorine, Copper, Scandium, Argon, Helium, Sulfur, Gallium, Sodium, Hydrogen, Cobalt, Neon, Lithium, Zinc, Chromium, Boron, Magnesium, Fluorine, Carbon, Nitrogen, Arsenic, Aluminium, Vanadium, Manganese, Calcium, Beryllium, Titanium, Germanium, Oxygen. Is "Silicon" in the previous list? 
Provide no explanation, directly answer with only "Yes." or "No."