It is "Curie" and the element is curium. Polonium is also named after their home country of Poland.
An example is francium (Fr).
The name of the chemical element is derived from Polonia because Marie Curie was born in Poland.
The element polonium was named for the country Poland.
The element named after Ruthenia is Ruthernium.
95 Americium 31 Gallium 32 Germanium 84 Polonium 87 Francium
The element name from American President is fictional and is called "Liberty."
Thorium.
The name of the chemical element californium is derived from the name of the state California, USA.
The name of the artificial chemical element darmstadtium is derived from the name of the town Darmstadt (Germany) where this element was discovered.
The chemical element europium was named after the continent Europe.
Im not that sure, but water.