Increased pulse and raised blood pressure. Also attacks central nervous system. Death by heart failure or paralysis. Post-mortem appearance Inflamed throat, stomach, rectum etc. Lead Usually used as one of its salts eg lead acetate.
Symptoms are severe stomach pains, vomiting, coms then death.
Repeated small doses can cause mental deterioration. Mercury Mercury salts are used in a wide variety of legitimate purposes - eg thermometers, paint. Symptoms and fatal doses vary immensely from type to type. Phosphorus Used to be used in matches and rat poison, but no longer. Yellow phosphorus causes liver damage, delirium then coma.