This article is from the source 'bbc' and was first published or seen on . It last changed over 40 days ago and won't be checked again for changes.

You can find the current article at its original source at http://www.bbc.co.uk/news/science-environment-35220823

The article has changed 2 times. There is an RSS feed of changes available.

Version 0 Version 1
Chemistry: Four elements added to periodic table Chemistry: Four elements added to periodic table
(about 5 hours later)
Four chemical elements have been formally added to the periodic table, completing the scheme's seventh row.Four chemical elements have been formally added to the periodic table, completing the scheme's seventh row.
They are the first to be included in the table since 2011, when elements 114 and 116 were added.They are the first to be included in the table since 2011, when elements 114 and 116 were added.
The first true iteration of the table was produced in 1869 by the Russian chemist Dmitri Mendeleev.The first true iteration of the table was produced in 1869 by the Russian chemist Dmitri Mendeleev.
The new additions were formally verified by the International Union of Pure and Applied Chemistry (IUPAC) on 30 December 2015.The new additions were formally verified by the International Union of Pure and Applied Chemistry (IUPAC) on 30 December 2015.
The body announced that a team of Russian and American researchers had provided sufficient evidence to claim the discovery of elements 115, 117 and 118.The body announced that a team of Russian and American researchers had provided sufficient evidence to claim the discovery of elements 115, 117 and 118.
How do elements get their names?
IUPAC awarded credit for the discovery of element 113 to a Japanese team at the Riken Institute.IUPAC awarded credit for the discovery of element 113 to a Japanese team at the Riken Institute.
The teams responsible for the discoveries have been invited to come up with permanent names and chemical symbols for the now-confirmed elements.The teams responsible for the discoveries have been invited to come up with permanent names and chemical symbols for the now-confirmed elements.
"The chemistry community is eager to see its most cherished table finally being completed down to the seventh row. IUPAC has now initiated the process of formalising names and symbols for these elements," said Prof Jan Reedijk, president of the inorganic chemistry division of IUPAC."The chemistry community is eager to see its most cherished table finally being completed down to the seventh row. IUPAC has now initiated the process of formalising names and symbols for these elements," said Prof Jan Reedijk, president of the inorganic chemistry division of IUPAC.
New elements can be named after a mythological concept, a mineral, a place or country, a property or a scientist.New elements can be named after a mythological concept, a mineral, a place or country, a property or a scientist.
After the responsible IUPAC division accepts the new names and two-letter symbols, they will be presented for public review for five months.After the responsible IUPAC division accepts the new names and two-letter symbols, they will be presented for public review for five months.
The chemistry organisation's council will then make a final decision.The chemistry organisation's council will then make a final decision.