A Comprehensive Treatise on Inorganic and Theoretical Chemistry, Volume 7Longmans, Green and Company, 1927 - Chemistry, Inorganic |
From inside the book
Results 1-5 of 28
Page 5
... HAFNIUM § 1. The History of Hafnium and Celtium ( 166 ) ; § 2. The Occurrence of Hafnium ( 166 ) ; § 3. The Extraction of Hafnia ( 167 ) ; § 4. Hafnium and its Properties ( 170 ) ; § 5. The Salts of Hafnium ( 170 ) . CHAPTER XLIV ...
... HAFNIUM § 1. The History of Hafnium and Celtium ( 166 ) ; § 2. The Occurrence of Hafnium ( 166 ) ; § 3. The Extraction of Hafnia ( 167 ) ; § 4. Hafnium and its Properties ( 170 ) ; § 5. The Salts of Hafnium ( 170 ) . CHAPTER XLIV ...
Page 24
... hafnium . H. Petterson and G. Kirsch obtained evidence of atomic disintegration when the atoms are bombarded by a - rays . The uses of titanium . - The pure element has not been used to any great extent , but metal alloys have been used ...
... hafnium . H. Petterson and G. Kirsch obtained evidence of atomic disintegration when the atoms are bombarded by a - rays . The uses of titanium . - The pure element has not been used to any great extent , but metal alloys have been used ...
Page 37
... hafnium , thorium , and cerium oxides . The hardness of rutile , etc. , on Mohs ' scale is indicated in Table IV , TABLE IV . THE POLYMORPHOUS TITANIUM DIOXIDES . in Sp . gr . D Hardness . Crystal vol . , v vD Ratios of v : D Mean ...
... hafnium , thorium , and cerium oxides . The hardness of rutile , etc. , on Mohs ' scale is indicated in Table IV , TABLE IV . THE POLYMORPHOUS TITANIUM DIOXIDES . in Sp . gr . D Hardness . Crystal vol . , v vD Ratios of v : D Mean ...
Page 99
... hafnium , copper , lithium , sodium , potassium , and , maybe , traces of radium , 75-865 × 10-12 grms . per gram , with occluded helium and neon.5 Accordingly , B. Lindemann proposed to call this group of minerals polycrasilites— from ...
... hafnium , copper , lithium , sodium , potassium , and , maybe , traces of radium , 75-865 × 10-12 grms . per gram , with occluded helium and neon.5 Accordingly , B. Lindemann proposed to call this group of minerals polycrasilites— from ...
Page 104
... hafnium . The phosphate is readily washed by decanta- tion with hydrochloric acid and water , and may then be dissolved in hydrofluoric acid and the zirconium reprecipitated as hydroxide . 4. Fusion with alkali hydrofluoride . - J ...
... hafnium . The phosphate is readily washed by decanta- tion with hydrochloric acid and water , and may then be dissolved in hydrofluoric acid and the zirconium reprecipitated as hydroxide . 4. Fusion with alkali hydrofluoride . - J ...
Other editions - View all
Common terms and phrases
According acid soln action Akad alkali alloys aluminium Amer ammonia ammonium anorg Biltz boiling bromide Bull calcium Cals cassiterite cent Chem Chim co-workers compound Compt conc containing copper crystalline crystals decomposed deposits dissolved Elektrochem evaporated fluoride formed fused gave germanium grms hafnium Hütt hydrated hydrochloric acid hydrogen chloride hydrogen dioxide hydrogen sulphide hydroxide insoluble Inst iodide J. J. Berzelius Jahrb Journ L. F. Nilson lead Liebig's Ann liquid metal mineral mixture Moissan molten nitrate nitric acid obtained ordinary temp oxalate oxide oxygen Phil Phys Physik Pogg potassium potassium hydroxide powder prakt precipitate Proc reaction Rend rutile salt Sitzber sodium soln soluble stannate stannic oxide stannous chloride stannous sulphide sulphate sulphuric acid thoria thorium thorium-C titanic titanium dioxide titanium tetrachloride Trans Wöhler Zeit zinc zirconia zirconium zirconyl
Popular passages
Page 278 - De l'origine des loix, des arts et des sciences, et de leurs progrès chez les anciens peuples (par GOGUET et FUGÈRE).
Page 274 - The plumbum candidum is the most valuable, and it was called cassiteros by the Greeks. There is a fabulous story told of their going in quest of it to the islands in the Atlantic Ocean, and of its being brought in boats made of osiers covered with hides. The plumbum candidum occurs as a black sand found on the surface of the earth, and is to be detected only by its weight ; it is mingled with small pebbles, particularly in the dried beds of rivers. The miners wash the sand, which is then melted in...
Page 586 - no adulteration of any article has ever been invented so pernicious to the health, and, at the same time, so much practised as that of wine, with preparations of lead ; and we heartily agree with him, ' that the inventor deserves severer execration than Barthold Schwartz, the supposed inventor of gunpowder.
Page 494 - They melt the lead upon the tops of hills that lye open to the west wind ; making their fires to melt it as soon as the west wind begins to blow — which wind, by long experience, they find holds longest of all others. But for what reason I know not, since I should think...
Page 298 - ... interest to the physicist and metallurgist than to the antiquary. The metal is not much oxidized, yet it is so exceedingly brittle that it can be easily broken with the fingers. The effect of time upon it has resulted in a complete alteration of its molecular structure, the mass of the alloy being converted into an agglomeration of crystals, and to this its brittleness is due. On smelting and casting a small fragment I found that the crystalline structure disappeared and the metal regained its...
Page 278 - The Cassiterides : an Inquiry into the Commercial Operations of the Phoenicians in Western Europe; with particular reference to the British Tin Trade.
Page 507 - Lead, its occurrence in nature, the modes of its extraction, its properties and uses with some account of its principal compounds.
Page 277 - Observations on the tin trade of the ancients, In Cornwall and on the " Ictis
Page 7 - They are based upon the fact that in an equilateral triangle the sum of the perpendicular distances of any...
Page 587 - The wine, however, occasions, according as it is used in a great or small quantity, and according to the constitution of the consumer, a speedy or lingering death, violent colics, obstructions and other maladies ; so that one may justly doubt whether, at present, Mars, Venus, or Saturn is most destructive to the human race. The ancients, in my opinion, knew that lead rendered harsh wine milder, and preserved it from acidity, without being aware that it was poisonous. It was therefore long used with...