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Author Topic: Which metal is first in the third row of the d block, lanthanum or lutetium?  (Read 302 times)

Offline chiralSPO

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Which metal is the first member of the third row of the "d block"? Some periodic tables show lutetium (Z = 71) , some show lanthanum (Z= 57). Some show all of the "lanthanides" together...
Lu :



If we go by physical/chemical properties of scandium and yttrium, like density and ionization energy Lu makes more sense as the first d-metal, and it would make sense given the previous structure of the periodic table, that the first d metals would align with the last of the f-block, not the first... So why does anyone do put La in instead?
« Last Edit: 01/07/2016 07:36:33 by chris »


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