iodine, polonium, arsenic, tetrachlorethylene, barium, caesium, cesium, selenium, potassium cyanide, contaminant, mercuric chloride, nitrite, carbon tetrachloride, bismuth, bromate, gadolinium, arsenide, hydrocyanic acid, ascorbic acid, americium, thiocyanate, sodium thiosulfate, cyanide, radioactive, urate, nitric, tritium, potassium, coumarin, strontium, nitrate, hesperidin, phenolphthalein, nitrobenzene, chromium, cobalt, sulfate, dioxane, barium sulphate, sodium fluoride, acrolein, tremolite, radioactivity, radium, salicylate, milligrams, tetroxide, osmium, digoxin, samarium, ethyl alcohol, chlorine, cadmium, methemoglobinemia, dioxin, oxalates, cyanide poisoning, prostate specific antigen, oxidizing agent, cyanuric acid, aconite, yttrium, meprobamate, krypton, electrolyte, antimony, activated charcoal, germanium, amphibole, radioactive material, thyroxine, bicarbonates, poisoning, oxalic acid, isotope, linalool, gamma radiation, chloride, ethylene glycol, succinylcholine, sodium chloride, thiamine, pentachlorophenol, diabetes insipidus, metabolic acidosis, radionuclide, ergotamine, cerium, phosgene, heptachlor, riboflavin, ppb, hydrogen chloride, europium, sulphate, manganese, astatine, ferritin, carbon disulfide, chlorpheniramine, alkali metal, iridium, lithium, vanadium, magnesium, phosphorus, bromine, fluorine, gallium, argon, beryllium, calcium, indium, 201, lead, aluminium, zinc, ferrous, ammonium, citrate, uranium

crookes, sir william crookes, william crookes

metal, metallic element

atomic number 81, tl