| Property | Value |
|---|---|
| Symbol | Ts |
| Atomic Number | 117 |
| Atomic Mass | ~292.00 u |
| Classification | Halogen (Superheavy) |
| Group | 17 (VIIA) |
| Period | 7 |
| State at STP | Synthetic/Theoretical Solid |
Half-life: Extremely short (~78 milliseconds for Ts-294)
Decay Mode: Alpha decay
Radioactivity: Highly radioactive
Stability: Unstable, synthetic element
Production: Only in particle accelerators
Tennessine is one of the heaviest synthetic elements ever created. With 117 protons, it pushes the boundaries of nuclear physics and exists only briefly in high-energy laboratory conditions. Its placement in the halogen group makes it theoretically the heaviest halogen, though its properties may differ significantly from lighter halogens due to relativistic effects.
Tennessine is a synthetic superheavy element that does not occur naturally. It can only be produced in particle accelerators and exists for extremely brief periods before decaying. All information about its properties is theoretical or extrapolated from its position in the periodic table.
First Creation: 2010
Location: Joint Institute for Nuclear Research (JINR), Dubna, Russia
Collaboration: Russian-American team
Official Recognition: 2016 by IUPAC
Naming: 2016, honoring Tennessee
Yuri Oganessian: Lead researcher at JINR
Research Team: JINR (Russia) and Oak Ridge National Laboratory (USA)
Method: Bombarding berkelium-249 with calcium-48 ions
Detection: Advanced particle detection systems
Tennessine was created by bombarding berkelium-249 targets with calcium-48 ions in a cyclotron. The fusion reaction produced just a few atoms of tennessine, which decayed within milliseconds. The element was detected by observing its characteristic decay chain, allowing scientists to confirm its existence and determine its atomic number.
The name "tennessine" honors the state of Tennessee and its contributions to superheavy element research. The state is home to Oak Ridge National Laboratory and Vanderbilt University, both of which played crucial roles in the element's discovery. The name follows IUPAC naming conventions for elements, with the suffix "-ine" indicating its halogen family membership.
Tennessine does not occur naturally anywhere on Earth, in the solar system, or in any known astronomical objects. It is exclusively a synthetic element created in laboratory conditions.
Natural Abundance: Zero
Earth's Crust: Not present
Oceans: Not present
Atmosphere: Not present
Living Organisms: No biological role
Even in the most extreme stellar environments, tennessine is not produced naturally. The nuclear conditions required for its formation exceed those found in supernovae or neutron star mergers. The element's extreme instability means it would decay instantly even if somehow formed in space.
Tennessine represents humanity's ability to create elements that don't exist anywhere else in the universe. Its creation requires sophisticated technology and controlled conditions that exist only in advanced particle physics laboratories. This makes every atom of tennessine a unique testament to human scientific achievement.
Due to its synthetic nature and extremely short half-life, tennessine has zero environmental impact. The tiny quantities produced (typically only a few atoms at a time) decay so rapidly that they pose no environmental risk. The element exists only within the controlled environment of particle accelerators and detection equipment.
Currently, tennessine has no practical applications in daily life due to its extremely short half-life and the minute quantities that can be produced.
Consumer Products: None
Household Items: Not present
Food & Nutrition: No role
Medical Applications: None currently
Personal Care: Not used
Nuclear Medicine: Potential for targeted therapy if stable isotopes could be found
Nuclear Physics: Understanding superheavy element behavior
Materials Science: Theoretical study of relativistic effects in chemistry
While tennessine has no direct daily life applications, its study contributes to our understanding of nuclear physics, quantum mechanics, and the fundamental nature of matter. This research may eventually lead to breakthroughs in nuclear technology, materials science, and our understanding of the universe's building blocks.
Tennessine serves as an excellent example in physics and chemistry education, demonstrating concepts such as nuclear stability, radioactive decay, relativistic effects in heavy atoms, and the limits of matter. Its study helps students understand the periodic table's structure and the ongoing quest to understand atomic behavior at the extremes.
Tennessine has no current industrial or manufacturing applications due to its synthetic nature, extreme rarity, and ultra-short half-life.
Manufacturing: Not used
Construction: No applications
Electronics: Not applicable
Transportation: No uses
Energy Sector: No applications
Production Cost: Extremely expensive (billions per atom)
Particle Accelerator Technology: Drives innovation in accelerator design
Detection Equipment: Advances in ultra-sensitive detection systems
Nuclear Research: Contributes to nuclear physics understanding
International Collaboration: Promotes scientific cooperation
While tennessine itself has no industrial applications, the technology developed to create and detect it has numerous spin-off applications. Advanced particle accelerators, ultra-sensitive detection systems, and sophisticated nuclear physics equipment developed for superheavy element research find applications in medical imaging, cancer treatment, materials analysis, and other fields.
If stable isotopes of tennessine could be discovered or if its half-life could be significantly extended, potential applications might include:
The research into tennessine and other superheavy elements drives economic activity in high-tech industries, supports thousands of jobs in research institutions, and advances technologies that benefit multiple sectors of the economy.
Primary Location: Joint Institute for Nuclear Research (JINR), Dubna, Russia
Secondary Facilities: GSI Helmholtz Centre, Germany
Collaboration Sites: Oak Ridge National Laboratory, USA
Future Facilities: Various international research centers
Equipment: Heavy ion cyclotron accelerators
Target Material: Berkelium-249
Projectile: Calcium-48 ions
Success Rate: Extremely low (few atoms per week)
Cost: Millions of dollars per successful synthesis
Tennessine production represents one of the most challenging synthetic processes on Earth. The international collaboration required involves sharing rare target materials, coordinating accelerator time, and pooling expertise from multiple countries. This makes tennessine a truly global scientific endeavor.
Berkelium-249: Extremely rare, produced only in specific nuclear reactors
Calcium-48: Enriched isotope, expensive to obtain
Accelerator Time: Months of continuous operation
Detection Equipment: Sophisticated particle detection arrays
Human Resources: Teams of specialized physicists and engineers
R&D Investment: Hundreds of millions of dollars
Operational Costs: Extremely high per atom produced
International Funding: Multiple government and institutional sponsors
Economic Value: Purely scientific, no commercial value
Due to its radioactive nature and the sophisticated equipment required for its production, tennessine research is conducted only in specialized, secure facilities with extensive safety protocols and international oversight.
Nuclear Physics: Tests theories about nuclear stability and the "island of stability"
Quantum Mechanics: Explores relativistic effects in heavy atoms
Periodic Table: Completes the 7th period of the periodic table
Fundamental Science: Pushes the boundaries of what matter can exist
Nuclear Models: Validates and refines nuclear shell models
Relativistic Chemistry: Studies how relativity affects chemical properties
Superheavy Elements: Guides research into even heavier elements
Atomic Structure: Enhances understanding of electron behavior in heavy atoms
Tennessine research maintains technological leadership in nuclear physics, drives innovation in accelerator technology, and strengthens international scientific collaboration. The knowledge gained contributes to nuclear energy, medical applications, and fundamental physics research that may have unforeseen future applications.
STEM Education: Inspires students in physics and chemistry
Research Training: Trains next generation of nuclear scientists
International Cooperation: Demonstrates benefits of scientific collaboration
Technology Transfer: Develops technologies with broader applications
Stable Isotopes: Search for potentially stable superheavy nuclei
New Elements: Pathway to elements 118 and beyond
Applications: Potential future uses if stability is achieved
Nuclear Technology: Advanced reactor designs and nuclear medicine
The extreme instability and minute production quantities of tennessine currently limit its significance to purely theoretical and research applications. However, the knowledge gained is invaluable for advancing nuclear science.
Tennessine holds the record for being the heaviest halogen ever created, the most expensive material per atom ever produced, and one of the shortest-lived synthetic elements. Creating just one atom requires more energy than powering a small city block for several minutes!
Science Fiction: Inspired stories about superheavy materials
Educational Media: Featured in documentaries about the periodic table
Video Games: Appears in chemistry-themed educational games
Internet Fame: Popular in science memes and social media
Scientists joke that tennessine is so rare and short-lived that it barely exists long enough to be named. Some researchers quip that by the time you finish saying "tennessine," the atom has already decayed three times over!
Despite existing for only milliseconds, tennessine has united scientists from Russia, America, Germany, and other countries in peaceful collaboration. It represents humanity's collective quest to understand the fundamental nature of matter and push the boundaries of what's possible.
The creation of tennessine required bombarding berkelium targets with calcium-48 ions for months. Scientists worked around the clock in shifts, knowing that each successful fusion event producing tennessine was extraordinarily rare. The team celebrated when they finally detected the characteristic decay signature that confirmed element 117's existence.
The discovery required an unprecedented level of international cooperation. Russian scientists provided the cyclotron and expertise, while American colleagues supplied the extremely rare berkelium-249 target material. This collaboration continued despite various political tensions, proving that science transcends borders.
One of the biggest challenges was obtaining enough berkelium-249 for the targets. Only Oak Ridge National Laboratory could produce this material, and it took years to accumulate enough for the experiments. The berkelium was so precious that every microgram was carefully tracked and accounted for.
Choosing the name "tennessine" was significant because it honored the American contribution to the discovery, particularly Tennessee-based institutions. This was unusual for elements discovered primarily in Russia, highlighting the truly collaborative nature of the research.
Scientists had to design detection systems fast enough to catch tennessine before it decayed. The element exists for such a brief time that even the speed of light becomes a limiting factor in detecting it. Engineers created specialized equipment that could identify the element's signature in less than a tenth of a second.
Yuri Oganessian: The lead scientist has become legendary in the superheavy element community. Known for his patience and persistence, he spent decades perfecting the techniques needed to create such elements.
The Night Shift: Graduate students and postdocs who worked night shifts monitoring the experiments often became the first to witness history, seeing the computer screens light up with detection signals.
Ground State: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁵ (predicted)
Valence Electrons: 7 (7s² 7p⁵)
Oxidation States: -1, +1, +3, +5 (predicted)
Electron Affinity: ~2.6 eV (calculated)
Ionization Energy: ~7.7 eV (first)
Mass Numbers: 293, 294 (known isotopes)
Half-lives: 22 ms (Ts-293), 78 ms (Ts-294)
Decay Mode: Alpha decay
Decay Products: Moscovium isotopes
Nuclear Stability: Highly unstable
Tennessine's extreme nuclear charge causes its inner electrons to move at significant fractions of the speed of light, leading to relativistic effects that may dramatically alter its chemical properties compared to lighter halogens. These effects could make tennessine behave more like a metal than a traditional halogen.
Physical State: Likely metallic solid
Bonding: May form covalent bonds like other halogens
Reactivity: Possibly less reactive than lighter halogens
Compounds: Predicted to form compounds with hydrogen, metals
Crystal Structure: Unknown, likely face-centered cubic
Safety Level: Extreme radioactive precautions required
Detection: Only through decay product analysis
Isolation: Currently impossible due to short half-life
Storage: Cannot be stored due to rapid decay
Manipulation: Only possible at the atomic level
Working with tennessine requires the highest level of radioactive material handling protocols. The element can only be studied through its decay products, and all research must be conducted in heavily shielded facilities with extensive monitoring systems.
Detection Method: Alpha decay spectroscopy
Identification: Decay chain analysis
Mass Determination: Time-of-flight mass spectrometry
Lifetime Measurement: Statistical analysis of decay events
Chemical Analysis: Not currently possible due to short half-life
Island of Stability: Search for longer-lived superheavy isotopes
Chemical Studies: Attempts to measure actual chemical properties
Nuclear Structure: Investigation of nuclear shell effects
Relativistic Chemistry: Understanding how relativity affects bonding
Advanced Accelerators: More efficient superheavy element production
Detection Systems: Faster, more sensitive measurement devices
Target Materials: Better berkelium production methods
Automation: AI-assisted experiment control and analysis
If stable or longer-lived isotopes of tennessine are discovered, they could revolutionize nuclear physics, lead to new types of nuclear reactors, enable novel medical treatments, and provide unique materials with unprecedented properties. The element could become a gateway to an entirely new realm of matter.
Resource Intensity: Developing more efficient production methods
Energy Requirements: Reducing the massive energy costs
Waste Management: Handling radioactive byproducts safely
International Cooperation: Sharing resources and expertise globally
Longer Half-lives: Finding more stable isotopes
Chemical Properties: Measuring actual chemical behavior
New Elements: Creating elements 118, 119, and beyond
Applications: Discovering practical uses for superheavy elements
The primary challenges include finding more stable isotopes, developing faster detection methods, improving production efficiency, and securing funding for long-term research programs that may not yield practical applications for decades.
Future tennessine research will likely involve even larger international collaborations, with new facilities in Asia, Europe, and the Americas. The sharing of expensive equipment, rare materials, and expertise will be crucial for advancing superheavy element science.
Tennessine's electron configuration [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁵ suggests it should behave as a halogen, but relativistic effects may dramatically alter its electrical properties. The 7p⁵ configuration typically indicates semiconductor or insulator behavior, but the extreme nuclear charge may create unique conduction mechanisms not seen in lighter elements.
Core Electrons: 110 electrons in inner shells
Valence Electrons: 7 electrons (7s² 7p⁵)
Electron Capacity: 2, 8, 18, 32, 32, 18, 7 (by shell)
Relativistic Effects: Significant s and p orbital contraction
Spin-Orbit Coupling: Extremely strong in heavy atoms
Band Gap: Predicted to be narrow or zero
Carrier Type: Likely p-type semiconductor
Mobility: Unknown due to relativistic effects
Resistivity: Predicted to be lower than other halogens
Temperature Dependence: May show metallic behavior
Electrical Conductivity (σ): Predicted 10⁴-10⁶ S/m (theoretical)
Resistivity (ρ): 10⁻⁶-10⁻⁴ Ω⋅m (estimated)
Temperature Coefficient: Possibly positive (metallic behavior)
Charge Carriers: Primarily electrons and holes
Carrier Mobility: Unknown due to relativistic effects
Band Gap: ~1-2 eV (predicted, may be zero)
Intrinsic Behavior: Likely p-type due to 7p⁵ configuration
Doping Potential: Theoretically possible
Junction Formation: Unknown due to short half-life
Device Applications: Purely theoretical
Tennessine's electrical properties are dominated by relativistic effects. The extreme nuclear charge causes inner electrons to approach light speed, contracting s and p orbitals while expanding d and f orbitals. This may result in metallic conductivity despite its halogen classification, making it unique among electrical materials.
Dielectric Constant: High (>10) predicted
Dielectric Loss: Unknown
Breakdown Voltage: Not measurable
Polarization: Electronic and ionic contributions
Frequency Response: Broadband response expected
Seebeck Coefficient: Large values predicted
Thermal Conductivity: Moderate (estimated)
Figure of Merit (ZT): Potentially high
Peltier Effect: Significant predicted
Applications: Theoretical cooling devices
All electrical properties of tennessine are theoretical or computational predictions. The element's 78-millisecond half-life and atomic-scale production quantities make direct electrical measurements currently impossible with existing technology.
Novel Semiconductors: Unique relativistic electronics
Quantum Devices: Strong spin-orbit coupling effects
Thermoelectric Cooling: High-efficiency energy conversion
Superconductivity: Possible at low temperatures
Spintronics: Spin-based electronic devices
Ohm's Law Applications: V = I⋅R (if bulk material existed)
Power Dissipation: P = I²⋅R = V²/R
AC Impedance: Z = R + jX (complex)
Skin Depth: δ = √(2ρ/ωμ) at frequency ω
Hall Voltage: V_H = (I⋅B)/(n⋅e⋅t)
Current engineering applications are impossible due to tennessine's radioactive instability. However, if stable isotopes were discovered, the element could revolutionize electronics through its unique relativistic properties, potentially enabling new types of quantum devices and ultra-efficient thermoelectric materials.
If stable tennessine isotopes are ever discovered, they could enable breakthrough technologies in quantum computing, ultra-efficient solar cells, novel superconductors, and spin-based electronics. The element's unique position as a relativistic halogen could provide electrical properties impossible to achieve with any other material.