Tennessine, a chemical element with atomic number 117, was synthesized in 2009 by a collaborative effort between Russian and American scientists and officially recognized by IUPAC in 2016. The discovery involved a series of steps from nomination to public announcement and it is characterized by properties typical of halogens, such as high reactivity and expected metallic appearance. Although only a few atoms of tennessine have been produced, it is primarily used for scientific research due to its instability and high radioactivity.

2. Steps from discovery to
recognition
1. Nomination
 the discovery of a new chemical element is typically announced by the research team that made the discovery and
submit their finding to international union of pure and applied chemistry (IUPAC) and international union of pure and
applied physics(IUPAP).
2. Verification process
3. Independent confirmation
4. Peer review
5.Criteria assesment
6. Public announcment
7.Naming and symbol assignment
8.Incorporation into periodic table

3. TABLEOFCONTENTS
DiscoveryofTennesinne
History and synthesisof
tennessine.
Atomicproperty Physical property
chemical property Application
01 02
04 05
03

4. Historyofthediscoveryoftennessine
 Tennessine was first discovered in
2009,it was synthesised in flerov
laboratory of nuclear reactions in
Dubuna, Russia by scientific
teams of Russia and united states
of America .
 Evidence of synthesis were first
published in april 2010 and made
official by the joint institute for
nuclear research.
 Officially recognized by iupac in
2016 as a newly discovered
element.

5. 1.theoreticalprediction
The existence of tennessine was
first predicted in the late 20th
century through theoretical
calculations based on periodic trend
of elements . Scientists
hypothesized that a element with
atomic number of 117 could exist
with in the halogen group.

6. 2.Experimentaleffort
Experimental efforts to synthesis Ts
begun in the early 2000.researchers
aimed to create an element through
nuclear fusion reactions by
bombarding heavy nuclei with
accelerated beam of lighter nuclei.

7. Collaborativeresearchteams
The discovery of tennessine was the
result of collaborative efforts
between multiple research
institutes and international teams of
scientists. One of the key
laboratories involved in the
discovery was the joint institute for
nuclear research( JNIR) in Dubna,
russia.

8. SynthesisatJINR
In 2010 scientists reported a
successful synthesis of Ts by
bombarding a target of berkelium-
249 with a beam of calcium -48ions.
This nuclear reaction occurred at the
joint institute of nuclear research .

9. RecognitionbyIUPAC
IN 2016, the international union of
pure and aplied chemistry (IUPAC)
officially recognized the discovery
of element 177 and named it
tennessine .

10. Integrationt
With its official recognition tennessine
was integrated into the periodic table of
elements occupying its place as the
heaviest halogen.

11. Atomic property
02
Periodic properties
Due to the position of Ts
we can tell the atomic
radius is lower than other
halogens. It also has low
ionization energy
electronegativity.
01
03
isotopes
Ts is expected to have
several isotopes.
Ts-293: most stable known
isotope of tennessine
Ts-294:is another
synthesized isotope.

12. Physical
properties of Ts
1. appearance: it is predicted to be a synthetic
element that is likely to be silvery metal at room
temperature.
2. Density : as a heavy element it is expected to
have high density
3. Melting and boiling points: these are not
precisely known, but as a heavy metal it would
have high melting and boiling points.
4. State at room temperature : its expected to be
solid at room temperature and pressure.
5. Conductivity: its expected to have metallic
properties including electrical conductivity
6. Radioactivity: being a synthetic element with a
short half life Ts is inherently radioactive which
poses challenges for experimental observation.

13. Chemical properties
1. Reactivity: expected to be highly reactive,
tending to form compounds with elements
that readily donate electrons .
2. oxidation state: Ts is expected to primarily
form compounds where it has an oxidation
state of -1.
3. Compound formation: predicted to form
compounds with metals and other non
metals similar to other halogens.
4. Chemical bonding: Ts is expected to form
covalent bonds with other elements .

14. Applications
only small number of atoms of
tennessine have ever been
produced and due to its high
radioactivity they have all
decayed away. Their current use
is for scientific research and
studies.