HAFNIUM metal - CRYSTAL BAR 99.45% ~ SECTION SPECIMEN # 1

HAFNIUM metal - CRYSTAL BAR 99.45% ~ SECTION SPECIMEN # 1 (image 1/1)
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Check out my other items ! in my shop 'THE MISTS OF AVALON' for other items on offer, thank you Hafnium Hafnium Hafnium Hafnium Afnio Hafnio Hafnium Háfnio HAFNIUM CRYSTAL BAR Hf= 99.45% Zr = 0.5% Approx weight ~ 13g approx size ~ 13mm a miniature specimen of a segment of hafnium crystal bar, clean, new Known information :- Most zirconium minerals contain 1 to 3% hafnium. Hafnium is a ductile metal with a brilliant silver lustre. Its properties are influenced considerably by the impurities of zirconium present. Of all the elements, zirconium and hafnium are two of the most difficult to separate. Hafnium is a Group 4 transition element. Because hafnium has a good absorption cross section for thermal neutrons (almost 600 times that of zirconium), has excellent mechanical properties, and is extremely corrosion resistant, it is used for nuclear reactor control rods Hafnium 6 72 Hf Hafnium 178.49 KEY Symbol: Hf Atomic Number: 72 Atomic Weight: 178.49 Element Classification: Transition Metal Discovered By: Dirk Coster, Georg von Hevesy Discovery Date: 1923 (Denmark) Name Origin: Hafnia, the Latin name of Copenhagen. Density (g/cc): 13.31 Melting Point (°K): 2503 Boiling Point (°K): 5470 Appearance: Silvery, ductile metal Atomic Radius (pm): 167 Atomic Volume (cc/mol): 13.6 Covalent Radius (pm): 144 Ionic Radius: 78 (+4e) read more
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