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单词 polonium
释义

polonium

/pəˈləʊnɪəm /
noun [mass noun]
The chemical element of atomic number 84, a radioactive metal occurring in nature only as a product of radioactive decay of uranium. (Symbol: Po) In the process, she discovered two new elements that are millions and billions of times more radioactive than uranium: radium and polonium....
  • Gentry had discovered that granites contain microscopic coloration halos produced by the radioactive decay of primordial polonium.
  • Radon can enter the body through the lungs, where it undergoes alpha decay to form polonium, a radioactive solid that remains in the lungs and continues to emit cancer-causing radiation.

Origin

Late 19th century: modern Latin, from medieval Latin Polonia 'Poland' (the native country of Marie Curie, the element's co-discoverer).

Rhymes

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更新时间:2024/9/21 15:27:40