Tennessine<\/b>\u00a0is a\u00a0synthetic<\/a>\u00a0chemical element<\/a>\u00a0with the\u00a0symbol<\/a>\u00a0Ts<\/b>\u00a0and\u00a0atomic number<\/a>\u00a0117. It is the second-heaviest known element and the penultimate element of the\u00a07th period<\/a>\u00a0of the\u00a0periodic table<\/a>.<\/p>\n The discovery of tennessine was officially announced in\u00a0Dubna<\/a>, Russia, by a Russian\u2013American collaboration in April 2010, which makes it the most recently discovered element as of 2020. One of its\u00a0daughter isotopes<\/a>\u00a0was created directly in 2011, partially confirming the results of the experiment. The experiment itself was repeated successfully by the same collaboration in 2012 and by a joint German\u2013American team in May 2014. In December 2015, the\u00a0Joint Working Party<\/a>\u00a0of the\u00a0International Union of Pure and Applied Chemistry<\/a>\u00a0(IUPAC) and the\u00a0International Union of Pure and Applied Physics<\/a>, which evaluates claims of discovery of new elements, recognized the element and assigned the priority to the Russian\u2013American team. In June 2016, the IUPAC published a declaration stating that the discoverers had suggested the name\u00a0tennessine<\/i>\u00a0after\u00a0Tennessee<\/a>, United States.<\/sup>\u00a0In November 2016, they officially adopted the name “tennessine”.<\/p>\n Tennessine may be located in the “island of stability<\/a>“, a concept that explains why some superheavy elements are more stable compared to an overall trend of decreasing stability for elements beyond bismuth on the periodic table. The synthesized tennessine atoms have lasted tens and hundreds of\u00a0milliseconds<\/a>. In the periodic table, tennessine is expected to be a member of group 17, all other members of which are\u00a0halogens<\/a>.[b]<\/a><\/sup>\u00a0Some of its properties may significantly differ from those of the halogens due to\u00a0relativistic effects<\/a>. As a result, tennessine is expected to be a volatile\u00a0metal<\/a>\u00a0that neither forms\u00a0anions<\/a>\u00a0nor achieves high\u00a0oxidation states<\/a>. A few key properties, such as its melting and boiling points and its first\u00a0ionization energy<\/a>, are nevertheless expected to follow the\u00a0periodic trends<\/a>\u00a0of the halogens.<\/p>\n\n","protected":false},"excerpt":{"rendered":" 117 Tennessine – placeholder – Radioactive symbol<\/p>","protected":false},"featured_media":49129,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[87,289],"product_tag":[],"class_list":{"0":"post-5770","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-elements-in-acrylic-cubes","7":"product_cat-ts","8":"desktop-align-left","9":"tablet-align-left","10":"mobile-align-left","11":"ast-product-gallery-layout-horizontal-slider","12":"ast-product-tabs-layout-horizontal","13":"ast-qv-on-image","15":"first","16":"onbackorder","17":"taxable","18":"shipping-taxable","19":"purchasable","20":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/product\/5770","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":0,"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/product\/5770\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/media\/49129"}],"wp:attachment":[{"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/media?parent=5770"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/product_brand?post=5770"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/product_cat?post=5770"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/smart-elements.com\/de\/wp-json\/wp\/v2\/product_tag?post=5770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}