seen from China
seen from United States
seen from China
seen from Hong Kong SAR China
seen from China
seen from United States
seen from United States
seen from United States
seen from China
seen from Malaysia
seen from Russia
seen from China
seen from Czechia
seen from Hong Kong SAR China
seen from Philippines
seen from Netherlands
seen from China
seen from Pakistan
seen from Sweden
seen from Malaysia
This is fluorine.
And this is fluorene.
Chemists are assholes.
The latter is named because it fluoresceses, and the former named after the mineral fluorite from which fluorine is primarily sourced. Fluorite fluoresces, and it where the word "fluorescent" came from.
