Explanatory notes
… neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium). … glass, in the preparation of arc‑lamp carbons and as a catalyst in the manufacture of nitric acid and ammonia. … Ammonium ceric nitrate appears in the form of red crystals. Cerium sulphates (cerous sulphate and its …