IUPAC votes to change standard atomic weights of 19 elements
Thursday, September 26, 2013 - 09:30
in Physics & Chemistry
(Phys.org) —The International Union of Pure and Applied Chemistry (IUPAC) has voted to change the standard atomic weight of 19 elements as listed on the Periodic Table of the Elements. The move has come following the annual meeting of a special Union commission held this past August. The changes are being made due to the availability of more precise measurements and have come about as a result of recommendations by the U.S. Geological Survey, commission members and other research organizations.