Please welcome Nihonium, Moscovium, Tennessine and Oganesson.
Here's where their names come from:
• Japanese researchers proposed Nihonium, symbol Nh, for element 113 after the Japanese word Nihon, which means Japan.
• A team consisting of scientists from Russia and the United States named element 115, symbol Mc, after Moscow, and element 117, symbol Ts, after Tennessee.
• Element 118 was named Oganesson, symbol Og, for Yuri Oganessian, a prolific element hunter, by the Russian team that discovered it.