Atomic weights change to ranges

By Education in Chemistry and Laura Howes2011-03-01T00:00:00

Periodic table section with weights expressed in pi chart form

Source: Chemistry international

The International Union of Pure and Applied Chemistry have published a new table of atomic weights

Instead of a standard value that is an average of the stable isotopes of an element, the new Table of Standard Atomic Weights contains 10 elements with their weights expressed as intervals to reflect the natural variation in atomic weight.

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