acid actual cautery americium astatine atomic cocktail berkelium brand brand iron branding iron caustic cauter cauterant cauterizer cautery cobalt corrosive curium einsteinium electrocautery escharotic fermium francium hahnium hot iron lunar caustic mendelevium mordant moxa neptunium plutonium polonium potential cautery promethium protactinium radiocalcium radiocarbon radioelement radioiodine radioisotope radiosodium radon tagged element technetium tracer uranium