Some say that Democritus named the atom "ATOMUS" which means "invisible" others say John Dalton but i would go with the former (Democritus).
The symbol for Silver is 'Ag' not 'Na' 'Ag' is taken from its Latin name Argentinum. 'Na' is the symbol for Sodium (latin name: Natrium) Silver is an Element. Atom is the smallest unit of any substance. Two silver atom would be present in Ag2
Radium has no Latin name as it was unknown to the Romans. The name "Radium" is a synthetic Latin style name made up by its discover: Marie Curie.
The name of the atom CaCl2 is calcium chloride. It is a compound made up of calcium and chlorine ions in a 1:2 ratio.
Atomus
English or old Latin
Latin America is made of many countries so to answer your question we need to have a name of a country.
Greek
It is the atom of deuterium. Its nucleus is composed of a proton and one neutron. The atom has one electron that is orbiting around the nucleus.
Atom is a word of Greek, not Latin, origin. It comes from the words "a" (not) and "temnein" (to cut) as the Greeks believed that atoms were the smallest particles of matter in the universe.
Metallica. There is no latin word. It's made up and is a proper name. It's the same in every language.
Hermes' Latin name was mercury.
the latin name for crocodile is 'crocodilius'!! =P