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