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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 copernicium

First recorded in 1005–10; named after Polish astronomer Nicolaus Copernicus.

Words nearby copernicium

Copenhagen 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 copernicium

copernicium
[ kō′pər-nēsē-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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更新时间:2024/9/20 10:44:29