Chemists have waited a long time for a new element to turn up and, now, four have been 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 highly radioactive, complete the seventh row of the periodic table and mean that science textbooks around the world are now out of date.
What happened in 2011?
Two new elements were added to the periodic table Four new elements were added to the periodic table The seventh row of the periodic table was completed A convention on the state of the periodic table took place