New elements on the periodic table are named

Meet nihonium (Nh), moscovium (Mc), tennessine (Ts) and oganesson (Og), the newest elements on the periodic table to receive names. But don't get too attached to the nomenclature for these elements, formerly known by their respective atomic numbers 113, 115, 117 and 118. The names are on a five-month probation before things are made official.