etymo note: chlor- خضر + other H/ηemial elements

1. Chlorine , Chloros
Chloros is greek for pale green.
whereas the arabic trilit. root for green (akhdar) is Kh-D-R
if we line it up with an hypothetical greek trilit. root for khloros (xloros),
we get X-L-R , Kh-L-R (greek) and Kh-D-R (arabic)
which suggests a possible connection between the two names of the same color.
What is needed is to check whether the L in XLOR is a phonological transformation of the D in KhDR and whether there are other examples of a D to L transformation from semitic / afroasiatic to Greek.
If this is the case than Chloros and Khadar could be cognates.



2. Sodium (Na), comes from lat. Natrium , with symbol thus Na, from greek Natrios , comes from Arabic / egyptian Natron
eg, the huge Wadi al Natron , natron valley , south of Alexandria in Egypt.
Natra has come to be synonymous with salts in ancient chemical nomenclature.

3. Potassium (K), comes from lat. Kalium, thus symbol is Ka , from the Arabic Qalja , which is the ash of plants.