/oss/taxonomy/term/2428/all en /oss/article/did-you-know/periodic-table <p>For the first time in history, drastic changes will be made to the atomic weights of 10 elements in the periodic table. In nature, many elements exist as isotopes such that the same element can have different atomic weights. The International Union of Pure and Applied Chemistry announced that the atomic weights of these elements will now be expressed as intervals, as opposed to the customary single value, to reflect the variation in atomic weight.</p> Tue, 23 May 2017 17:47:53 +0000 emily.shore@mcgill.ca 2482 at /oss