The International Union of Pure and Applied Chemistry or IUPAC, for short, has just confirmed that four new elements have been included in Mendeleev’s table of periodic elements. Although the elements were discovered some time ago, they only had temporary names.
According to the old denomination, the four elements were called Ununoctium, Ununseptium, ununpentium, and Ununtrium. And now, in order to formerly welcome the four new elements in Mendeleev’s family and, of course, to honor the scientists who discovered them, IUPAC named them Moscovium, Tennessine, Nihonium, and Oganesson.
Nihonium, one of the new elements which were recently included in the periodic table of elements, is a synthetic (produced only in small quantities in a controlled environment) element which has an atomic number of 113. The element can only be synthesized in a lab for a short amount of time since it is very unstable.
Nihonium has a half-life of approximately 20 seconds, and shares chemical properties with aluminum, indium, thallium, and boron. The element was first discovered in 2003 by a team of Japanese researchers. To honor the team and the country which discovered it, element 113 now bear the name of Nihonium.
Moscovium was discovered in the same year as Nihonium by a team of American and Russian scientist. Named in honor of Russia’s capital, Moscovium is a super-heavy element which can only be synthesized in laboratory conditions. The element’s most stable isotope (Moscovium-289) has a half-life of approximately 220 milliseconds.
Moscovium, formerly known as element 115, shared many chemical properties with elements such as bismuth, antimony, nitrogen, phosphorus, and arsenic.
Tennessine was discovered in 2010 by a team of Russian and American Research. Formerly known as element 117, Tennessine bears the name of the American state of Tennessee. Tennessine is a super-heavy synthetic element with a half-life of two hundred milliseconds and is quite volatile.
The last element to have received a name is eka-radon or element 118. This element now bears the name of Oganesson, in honor of Doctor Yuri Oganessian, the nuclear physicist who led the team that made the monumental discovery.
Like the other three elements, Oganesson is a super-heavy synthetic element with a half-life of 0.89 milliseconds.
It would seem that the Mendeleev’s periodic table of element now includes 118 elements, and perhaps, in time, others will be added.
Image source: Wikipedia