Such is the lot of the modern-day chemist: you wait ages for a new element to turn up and then four come along at once. Discovered by researchers in Japan, Russia and the US, the four new elements are the first to be added to the periodic table since 2011, when elements 114 and 116 were included. The new elements, all spectacularly short-lived and highly radioactive, complete the periodic table’s seventh row and render science textbooks around the world out of date.
What is true about the new elements?
They emit a significant amount of radiation They begin the seventh row of the periodic table They behave similarly to elements 114 and 116 They are exist mainly in the form of a gas