eka-protactinium

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English[edit]

Etymology[edit]

eka- +‎ protactinium

Noun[edit]

eka-protactinium (uncountable)

  1. Unbitrium (Ubt), an unsynthesized chemical element with atomic number 123.
  2. Unquadunium (Uqu), an unsynthesized chemical element with atomic number 141.