Memorising the periodic table just got even harder as four new elements have just been included, completing its seventh row and instantly rendering all science textbooks outdated.

The International Union of Pure and Applied Chemistry have verified elements 113, 115, 117, and 118, which will soon get their new names.

Kosuke Morita of Riken Nishina Center for Accelerator-Based Science points out the new elements added to the periodic table of the elements during a press conference. Credit:AP

Elements can be named after a mythological concept, mineral, place, country, property or a scientist. The last element to be named was Ununseptium in 2010.

The US-based union announced there is now enough evidence to give the synthetic elements - discovered by Japanese, Russian and American scientists - permanent places on the table.