Einsteinium Rutherfordium
They are named by the first two letters of their Latin name.
There are two elements that are known to be named after ancient lands. These two elements are ruthenium (after the ancient name, Ruthenia, an Eastern European cross-section) and gallium (after Gaul, the ancient name for France).
uranium-uranus plutonium-pluto
Marie Skłodowska Curie and her husband Pierre discovered the elements polonium and radium in 1898, and named polonium for her native country Poland.
Curium after Marie Curie Einsteinium after Albert Einstein
Americium and Europium are the elements named for large regions which include several countries.
Remember that a compound is the combination of two or more elements. Cd is the symbol for an element (not a compount) named Cadmium.
sweden and germany
Not really. There was no notable person with that name although it is possible that there are (were) people with that name. The Cayley–Hamilton theorem is named, not after a person called Cayley Hamilton, but after TWO mathematicians: Arthur Cayley and William Rowan Hamilton.
The two elements named after continents are europium (named after Europe) and americium (named after America).
Maybe Scandium, Europium, Berkelium - there are probably many more. - Californium -
The two elements named after states are francium and californium. Francium is named after France, while californium is named after California. Both elements highlight the geographic connection to their respective locations, with francium being one of the rarest naturally occurring elements and californium being synthetically produced and used in various applications, including nuclear reactors.