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Periodic elements

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Convert periodic element property values to different property values, for example atomic numbers to element names or symbols. Only a subset of element properties are available for conversion. Strings can be separated using a number of different delimiters: space, comma, colon, semi-colon, and hyphen. You can mix and match delimiters, but they are required.

— Data sourced from Bowserinator / Periodic-Table-JSON under the Creative Commons Attribution-ShareAlike 3.0 License.