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This section seems rather out of place here, perhaps it would be better on the titanium dioxide page? A13ean ( talk) 14:58, 29 July 2011 (UTC) reply

The picture is missing a label for element 5. How will the world ever know what the fifth element is!? The suspense is too much!
:)       -- RProgrammer ( talk) 15:10, 22 July 2020 (UTC) reply

An old version calls it a spring. [1]