Iron
The Latin Name of Mercury is Hydrargyrum that is why it's symbol is Hg.
Potassium has a chemical symbol that is derived from a Latin name.
Sn is the symbol for tin. (from Latin: stannum)
Elements
From the Latin word cuprum, which means "from the island of Cyprus."From the Latin word cyprium, after the island of Cyprus
the latin element lithos
aurum
An abbreviation of the elements name. Some are from their Latin words. E.g. Iron is Fe as in Latin it's ferrous.
Sometimes symbols are derived from the latin or greek name of the elements Sodium Latin: Natrium Symbol: Na
"strontium" as with all elements takes it's name from the Latin word "Strontia"
S is the symbol for Sulfur.
Iridium
Aurum. Means " shining dawn. ''
Cu is only one element- copper. But its latin name is Cuprum.
By the first letter or Latin name
They are named by the first two letters of their Latin name.
Na, the symbol for sodium. Natrium is the Latin name of sodium.