<p>That would be Tennessine it was discovered by bombardment of berkelium with calcium. It is the second-heaviest known element.</p><p><br></p><p><br></p><p><br></p><p>Other than nuclear properties, no properties of tennessine or its compounds have been measured; this is due to its extremely limited and expensive production</p><p>&nbsp;</p><p>and the fact that it decays very quickly. Properties of tennessine remain unknown and only predictions are available.</p><p><br></p><p><br></p><p><br></p>

<p>are these elements Nihonium, Moscovium, and Tennessine?</p><p><br></p><p>discovered by <a href="https://en.wikipedia.org/wiki/Joint_Institute_for_Nuclear_Research" target="_blank">Joint Institute for Nuclear Research</a>, <a href="https://en.wikipedia.org/wiki/Lawrence_Livermore_National_Laboratory" target="_blank">Lawrence Livermore National Laboratory</a>, <a href="https://en.wikipedia.org/wiki/Vanderbilt_University" target="_blank">Vanderbilt University</a> and <a href="https://en.wikipedia.org/wiki/Oak_Ridge_National_Laboratory" target="_blank">Oak Ridge National Laboratory</a></p>

<p>In December 2015, elements 113, 115, 117, and 118 were approved by the International Union of Pure and Applied Chemistry (IUPAC) to be added to the periodic table. Five months later, they have names, and are to be added to the table as seventh-period elements. These elements are extremely heavy, and very unstable due to their high number of protons. Their names are as follows:&nbsp;</p><p><br></p><p>Element 113: nihonium (Nh)</p><p>Element 115: moscovium (Mc)</p><p>Element 117: tennessine (Ts)</p><p>Element 118: oganesson (Og)</p><p>They are named after the areas where they were invented. Nihonium's name comes from Nihon, which means Japan in Japanese. The last time it was created was in 2012 by Japanese scientists at the RIKEN Nishina Center for Accelerator by colliding zinc nuclei in a thin layer of bismuth. Nihonium's most stable isotope has a half life of 20 seconds.&nbsp;</p><p><br></p><p>Moscovium is named after Moscow, since it was created at the Joint Institute for Nuclear Research in Dubna, Russia. Element 117 is named tennessine because it was created at Oak Ridge National Laboratories in Tennessee. Element 118 is named after physicist Yuri Oganessian.</p>

<p>Tennessine is a synthetic element that was first synthesized in 2003 by a team of Russian and American scientists at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, and at the Oak Ridge National Laboratory (ORNL) in Tennessee, USA. It is named after the state of Tennessee, where the ORNL is located.</p><p>Tennessine is a highly unstable element with a very short half-life, and little is known about its properties or potential uses. It is classified as a halogen, and is expected to have properties similar to those of the other halogens such as chlorine and iodine.</p><p>The discovery of tennessine was a major achievement in the field of nuclear physics and chemistry, and demonstrated the continued progress in the synthesis and study of new elements. However, it is worth noting that the creation and study of synthetic elements is a complex and expensive process, and there are ongoing debates among scientists about the value and significance of this research.</p><p><br></p>