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Copernicium Facts & Worksheets

Copernicium is a lab-made chemical element with the symbol Cn and atomic number 112. Its isotopes are hazardous and short-lived.

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Copernicium is a human-made chemical element with the atomic number 112. Its symbol is Cn. Its known isotopes are hazardous and have only been made in a lab. Copernicium-285, the most stable known isotope, has a half-life of about 30 seconds. The GSI Helmholtz Center for Heavy Ion Research near Darmstadt, Germany, made copernicium for the first time in February 1996. On the 537th anniversary of the birth of the physicist Nicolaus Copernicus, it was named after him.

See the fact file below for more information about Copernicium, or you can download our 27-page worksheet pack to utilize within the classroom or home environment.

Facts

HISTORY AND DISCOVERY OF COPERNICIUM

  • The element copernicium is human-made, meaning synthetic, and not found in nature but synthesized in laboratories. It has the symbol Cn (not Cp) and atomic number 112 in the periodic table.
  • It was first created in 1996 by Victor Ninov and Sigurd Hoffmann at the GSI Helmholtz Center for Heavy Ion Research (Gesellschaft für Schwerionenforschung) near Darmstadt, Germany.
  • The synthesis involved hitting a lead-208 nucleus with a fast zinc-70 nucleus, producing a single atom of copernicium with a mass number of 277.
  • In 2000, another atom of copernicium was synthesized at GSI. Its longest-lived isotope has a half-life of approximately 30 seconds, and the element is highly radioactive.
  • Named after astronomer Nicolaus Copernicus, who formulated the heliocentric model (planets revolving around the sun), the element was officially recognized with the symbol Cn to avoid confusion with other element abbreviations.
  • Copernicium’s properties are studied under laboratory conditions due to its instability and inability to exist naturally.
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COPERNICIUM IN THE PERIODIC TABLE

  • Cn is a human-made element produced exclusively in laboratories through nuclear fusion reactions, such as bombarding lead with zinc ions. Its isotopes are extremely radioactive, with the most stable lasting only about 30 seconds before decaying.
  • Positioned in the same group (group 12) as mercury, zinc, and cadmium, Cn shares some predicted chemical similarities with these elements. However, relativistic effects—due to its high atomic mass—cause deviations, such as potential oxidation states of +4, which are rare or absent in its lighter homologs.
  • Unlike mercury, which is a liquid at room temperature, Cn is theorized to be a gas or highly volatile liquid under standard conditions. 
  • Experiments with gold surfaces suggest it exhibits unexpected volatility, behaving more like a noble gas than a typical metal.
  • As a superheavy element, copernicium contributes to research on the hypothesized “island of stability,” where certain heavy nuclei may exhibit longer half-lives. Its synthesis and decay properties provide insights into the limits of the periodic table.

PHYSICAL AND CHEMICAL PROPERTIES OF COPERNICIUM

  • Physical
  • In the periodic table, copernicium is a d-block transactinide element and belongs to element group 12.
  • Some predicted it to be in a gaseous state at room temperature and pressure, a unique property attributed to its electrons being arranged in a closed shell.
  • When reacted with gold, this element showed to be an extremely volatile metal.
  • Many radioactive isotopes have been created in the lab, either by observing the decay of heavier metals or by fusing two elements.
  • Cn is theorized to be the first metal ever identified as a gas under standard conditions.
  • Classified as a transition and post-transition metal, it exhibits distinct differences from other group 12 elements, such as its exceptional volatility and gaseous state.
  • Different from other elements in its group in several ways. In its solid form, it has a remarkably high density of 23.0 g/cm³, making it the heaviest element in its group.
  • Copernicium’s appearance is unknown because no samples are visible. At room temperature, however, theoretical calculations indicate that it is a thick, metallic solid. Because of its stronger metallic bonding, copernicium is expected to have a greater melting and boiling point than mercury, which is a liquid.
  • Chemical
  • People think that Cn is one of the most harmful elements. It has a very unstable behavior and can react with gold.  
  • Cn is not easily oxidized like the other elements in its group; it needs certain conditions to oxidize.  
  • At room temperature, it changes a lot, and the metal links are somewhat weak. Cn can be combined with silver, gold, copper, platinum, and palladium to make metal links.  
  • Copernicium ions don’t form stable combinations very often.  Copernicium can be in two different oxidation states in water: +2 and +4. When copernicium and cyanide mix, they make the stable substance Cn (CN)2.
  • Cn does not exist in any stable or naturally occurring isotopes. 
  • Cn comes in seven radioactive and synthetic isotopes, with mass numbers ranging from 281 to 286 and 277. Compared to lighter isotopes, heavier isotopes are more stable. 
  • The most stable isotope, copernicium-285, has a half-life of 29 seconds, but copernicium-283 only has a half-life of 4 seconds. 
  • Heavy isotopes are only created by decaying heavier nuclei, whereas light isotopes—aside from copernicium-277—form by the direct fusion of two lighter nuclei.

PRODUCTION

  • Cn is an element made in a lab and not found in nature.
  • Because of its short half-life, copernicium can only be produced in nuclear laboratories.

USES

  • Currently, it’s only used for study and has no other uses or applications. There is no chance of getting sick from it because it is not found in nature.

EFFECTS OF COPERNICIUM

  • Health effects of copernicium
  • Because it is so unstable, any amount made would break down into other elements so fast that there is no reason to look into how it affects health.
  • Copernicium is a poisonous gas. However, its health risks are not well understood.
  • Environmental effects of copernicium
  • Coupled with its very short half-life (about 0.24 milliseconds), copernicium has no environmental concerns.

FUN FACTS

  • The symbol Cp was first recommended for the metal but was rejected as it had already been used for lutetium till 1949. So, for more than a decade, it was known as element 112.
  • Roentgenium, bohrium, darmstadtium, hassium, and meitnerium were also discovered at the same time as Cn.
  • Cn is the heaviest existing element, specifically 200 times heavier than hydrogen.
  • Cn is synthesized by bombarding lead targets with zinc ions traveling at speeds of 30,000 km/s over a two-week period.
  • The isotope copernicium-277 exhibits a half-life of 0.24 milliseconds.
  • Cn is of significant interest in nuclear physics and the study of the limits of the periodic table since it is a superheavy element with a very short half-life, which limits its practical applications.
  • Given its synthetic origin and highly limited availability, copernicium’s role in chemistry is essentially theoretical and research-oriented. It helps us comprehend the heaviest elements of the periodic table by investigating the chemical and physical characteristics of superheavy elements.
  • Other elements, such as livermorium and flerovium, were discovered using the copernicium isotope CP-283.

Copernicium Worksheets

This fantastic bundle includes everything you need to know about Copernicium across 27 in-depth pages. These ready-to-use worksheets are perfect for teaching kids about Copernicium. Copernicium-285, the most stable known isotope, has a half-life of about 30 seconds. The GSI Helmholtz Center for Heavy Ion Research near Darmstadt, Germany, made copernicium for the first time in February 1996. On the 537th anniversary of the birth of the physicist Nicolaus Copernicus, it was named after him.

Copernicium Worksheets
Copernicium Worksheets
Copernicium Worksheets

Complete List of Included Worksheets

Below is a list of all the worksheets included in this document.

  1. Copernicium Facts
  2. Copernicium Basics
  3. Vocabulary Review
  4. Word Corrector
  5. Stop, Check, Bingo!
  6. Element Profile
  7. Group XII
  8. Copernicium Compounds
  9. Synthetic Element
  10. Element Limerick
  11. Musical Composition

Frequently Asked Questions

What is Copernicium?

It is a synthetic chemical element with the symbol Cn and atomic number 112. It belongs to Group 12 in the periodic table and is classified as a d-block transactinide element. It was named in honor of the astronomer Nicolaus Copernicus.

How was Copernicium discovered?

It was first synthesized on February 9, 1996, by a team of scientists at the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany. They created it by bombarding lead-208 atoms with zinc-70 ions.

Is Copernicium radioactive?

Yes, it is extremely radioactive. Its most stable isotope, Copernicium-285, has a half-life of about 29 seconds, although some nuclear isomers may last up to 8.9 minutes.

What are the uses of Copernicium?

Due to its short half-life and synthetic nature, it has no practical applications outside of scientific research. It is mainly studied to understand the behavior of superheavy elements and to explore the limits of the periodic table.

Can Copernicium be found in nature?

No, it is not found in nature. It can only be produced in laboratories under highly controlled conditions by nuclear fusion reactions.

References

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Link will appear as Copernicium Facts & Worksheets: https://kidskonnect.com - KidsKonnect, August 6, 2025

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These worksheets have been specifically designed for use with any international curriculum. You can use these worksheets as-is, or edit them using Google Slides to make them more specific to your own student ability levels and curriculum standards.

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