Roentgenium remained a hypothetical heavy element until its synthesis in 1994. As the heavier homologue to gold, it was sometimes previously known as eka-gold, which is a bit less silly than its other placeholder name, unununium (or Uuu). Its final name, made official in 2004, commemorates Wilhelm Rontgen, who discovered X-rays. Whilst it is predicted to have similar properties to gold, silver, and copper, it is difficult to study as its longest known half life is about ten minutes.
https://www.etsy.com/uk/listing/605.....-ooak-handmade
https://www.etsy.com/uk/listing/605.....-ooak-handmade
Category Crafting / All
Species Unspecified / Any
Size 647 x 600px
File Size 137.3 kB
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