Periodic table

Scientists officially announced they added four new synthetic elements to the periodic table Wednesday.

Following five months of review, the names proposed by the discoverers have been approved by the the International Union of Pure and Applied Chemistry (IUPAC). The new elements will be added into the table's seventh row and will be called nihonium (Nh), moscovium (Mc), tennessine (Ts), and oganesson (Og).

"Keeping with tradition, the newly discovered elements have been named after a place or geographical region, or a scientist," IUPAC announced. "The ending of the names also reflects and maintains historical and chemical consistency: '-ium' for elements 113 and 115 and as for all new elements of groups 1 to 16, '-ine' for element 117 and belonging to group 17 and '-on' for element 118 element belonging to group 18."

The periodic table arranges chemical elements in the order of their number of protons in the nucleus of their atoms, starting with single proton hydrogen and ending with oganesson, with 118 protons.

Here are the four elements and 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 Ms, 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.

Source: NYT

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