Changes

*[[Sodium]] = [[Sodium|Na]]*[[Potassium]] = [[Potassium|K]]*[[Iron]] = [[Iron|Fe]]*[[Tungsten]] = [[Tungsten|W]]*[[Silver]] = [[Silver|Ag]]*[[Gold]] = [[Gold|Au]]*[[Lead]] = [[Lead|Pb]]*[[Tin]] = [[Tin|Sn]]*[[Mercury (Element)|Mercury]] = [[Mercury (Element)|Hg]]