Final answer:
The element named after the Greek mythological figure Prometheus is promethium, symbol Pm, a rare and radioactive metal from the lanthanide series.
Step-by-step explanation:
The element named after Prometheus is promethium, symbol Pm. It is a rare earth metal that is part of the lanthanide series in the periodic table. In Greek mythology, Prometheus is known for having stolen fire from the Olympian gods as a gift for humanity, which symbolically resonates with the element of fire mentioned in various mythological contexts.
Promethium, with its unstable and radioactive properties, can be seen as a metaphorical representation of the stolen celestial fire, bridging a connection between mythology and modern science.