| 单词 | copernicium |
| 释义 | copernicium[ koh-per-nis-ee-uhm ] / ˌkoʊ pərˈnɪs i əm / noun Chemistry, Physics.a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Cn; atomic number: 112. Formerly un·un·bi·um [uh-nuhn-bee-uhm], /əˈnʌn bi əm/, el·e·ment 112 . Origin of coperniciumFirst recorded in 1005–10; named after Polish astronomer Nicolaus Copernicus. Words nearby coperniciumCopenhagen interpretation, copepod, coper, Copernican, Copernican system, copernicium, Copernicus, Copernicus, Nicolaus, copestone, Copht, Copiague Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Scientific definitions for coperniciumcopernicium [ kō′pər-nē′sē-əm ] Symbol Cn A synthetic radioactive element that has only been produced in trace amounts. The most stable isotope has a mass number of 285 and a half-life of about 34 seconds. Atomic number 112. See Periodic Table. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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