I'm honestly a fan of having the option to use standardised/latinised chemical element names.

Cu = Cuprum = Copper.

Hg = Hydrargyrum = Mercury. Hydrargyrum is still sometimes (very very rarely) used in English.

Pb = Plumbum = Lead. The French for lead is plomb, for example. Would clear up a lot of confusion with homographs. We already use plumb in English, as in plumb line. (The fact that it's plumbum, not plumbium, does undermine the whole aluminium>aluminum argument obviously).

Argentum instead of silver. Plenty of languages use a variation of that already. English already uses argent in some contexts, like heraldry.

Same thing for natrium instead of sodium, also common to have a variation of that in plenty of languages.

IRC Silicium was the originally proposed name for silicon. Plenty of languages also use a variation of that.