What specific violent event is responsible for ejecting elements synthesized up to iron into surrounding interstellar space?

Answer

Supernova

The collapse following iron core formation in a high-mass star triggers a rebound shock wave resulting in a supernova explosion, which ejects all elements synthesized during the star's life, up to iron.

What specific violent event is responsible for ejecting elements synthesized up to iron into surrounding interstellar space?
Elementstarformationnucleosynthesisastrophysic