The element of atomic number 72 (later named hafnium), claimed to have been discovered in minerals containing lutetium and other rare earth elements.
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| 释义 | the world > matter > chemistry > elements and compounds > metals > specific elements > hafnium > [noun] (2) celtium1911 The element of atomic number 72 (later named hafnium), claimed to have been discovered in minerals containing lutetium and other rare earth elements. hafnium1923 A metallic element with a silver lustre usually found associated with zirconium, which it closely resembles chemically, and used in nuclear reactor… |
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