Every day, new advancements are being made in science. The seventh row of the periodic table is now complete. Earlier this week, four new elements were confirmed and earned their permanent spot on the periodic table.

These four elements cannot be found in nature, only synthesized in a lab.

These elements were discovered over seven years ago, but were not confirmed until now because they decay within a matter of seconds.

“For over seven years we continued to search for data conclusively identifying element 113, but we just never saw another event,” stated in ScienceAlert, according to Kosuke Morita from RIKEN in Japan. “I was not prepared to give up, however, as I believed one day, if we persevered, luck would fall upon us again.”

Morita and his team, who are not only the discoverers of element 113, but also the first researchers from Asia to discover an element added to the periodic table, will have the naming rights. For now, element 113’s temporary name is ununtrium, and its temporary symbol is Uut.

The last three elements, 115, 117 and 118, which were proven as elements by a team of US and Russian researchers, will also have temporary names and symbols until named by the team. They will respectively be known as ununpentium (Uup), ununseptium (Uus) and ununoctium (Uuo).