To Erb is Human…

Been cataloguing some of my elements sub-collection today. I have added the following (left to right, top to bottom):

  • Erbium, Yttrium, Hafnium, Dysprosium, and Ytterbium
  • Gadolinium, Samarium, Holmium, Lutetium, and Scandium

You can click on the Periodic Table elements in the link below to go to the individual entries…

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