Introduction to Tennessine (Ts)
Tennessine, symbolized as Ts, represents element 117 on the periodic table. It is a synthetic superheavy element, meaning it does not occur naturally on Earth and must be created in a laboratory. The creation of such elements pushes the boundaries of scientific understanding regarding the structure of matter and the limits of the periodic table.
Discovery of Tennessine
The first synthesis of Tennessine occurred in 2010 through a collaborative effort. Scientists from the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, worked alongside researchers from Oak Ridge National Laboratory (ORNL) and Vanderbilt University in the United States. The experiment involved bombarding a target of berkelium-249 (an element with 97 protons) with a beam of calcium-48 ions (each with 20 protons) in a particle accelerator. This fusion reaction resulted in the production of a few atoms of Tennessine, confirming its existence. The specific isotopes observed had a very short lifetime, decaying quickly into other elements.
Naming of Tennessine
The name “Tennessine” was proposed by the discoverers and officially approved by the International Union of Pure and Applied Chemistry (IUPAC) in 2016. It was named in recognition of the region of Tennessee, USA, specifically honoring the significant contributions of the Oak Ridge National Laboratory and Vanderbilt University to the research of superheavy elements. This practice of naming elements after places or institutions is common in chemistry, acknowledging the locations where groundbreaking scientific work is performed.
Properties and Classification
Tennessine is positioned in Group 17 of the periodic table, making it a member of the halogen family, alongside elements like fluorine, chlorine, and iodine. However, due to its extremely high atomic number and the relativistic effects on its electrons, its chemical properties are predicted to be different from those of its lighter halogen counterparts. For instance, it is theorized that Tennessine might exhibit some metallic characteristics, which is unusual for a halogen. Only a few atoms have ever been created, and their extremely short half-lives make it impossible to study their macroscopic chemical properties directly.
Quick Facts About Tennessine
- Atomic Number: 117
- Symbol: Ts
- Classification: Synthetic superheavy element, located in Group 17 (halogens) of the periodic table.
- Stability: Extremely radioactive with a very short half-life, meaning it decays into other elements in fractions of a second. The most stable isotope, Tennessine-294, has a half-life of approximately 51 milliseconds.
- Production: Only a handful of atoms of Tennessine have ever been produced, each requiring highly specialized particle accelerators and significant scientific collaboration.