Template talk:Periodic table (by nutritional elements)

I think that it is incorrect to show Fluorine (coloured yellow) as having "no identified biological function in humans". Human tooth enamel normally contains fluorine and tooth enamel in humans with little fluorine in their dietary intake develop a "fluorine-deficient" tooth enamel which is less resistant to chemical/biological attack. I believe that fluorine should be recorded as "an essential trace element" 121.220.134.88 (talk) 01:02, 4 June 2012 (UTC)[reply]

Fluorine is useful for protecting tooth enamel, but this seems to fall short of what one might consider an actual biological function. The protective effects of fluorine due to an arbitrary characteristic of enamel that is not necessary for tooth formation; I don't think enamel "evolved" to accept fluorine. If there is a reference which suggests natural fluorine in the environment is common enough to have an effect on teeth, that might help. TricksterWolf (talk) 12:32, 27 November 2012 (UTC)[reply]

Biological requirement chart colors

• Note: This discussion is transcluded from Talk:Abundance of the chemical elements/Archive 1#Biological requirement chart colors. To avoid confusion, please go there to contribute. RockMagnetist(talk) 16:00, 22 August 2018 (UTC)[reply]

Dark mode/theme: conflict on legend/labels vs table colors

I was almost about to edit this because I thought someone pulled a prank where the colors are mislabeled or applied to the wrong elements, but it turns out that Dark Mode just reversed the color values (brightness?); so, you end up with the dark color labels (the six elements) actually being brighter in the table, and the bright colors (trace elements) actually being darker in the table. Somebody needs to do something about this, have it discussed on display/theme threads or something, or at least account for dark mode user for this particular template. CheckNineEight (talk) 14:12, 11 May 2025 (UTC)[reply]