In the layered structure of a massive dying star just before collapse, what is typically found at the very center?

Answer

Inert iron core

In the moments before core collapse, the star is structured with the heaviest element at the center, which is the inert iron core, surrounded by shells where lighter elements are actively fusing.

In the layered structure of a massive dying star just before collapse, what is typically found at the very center?
ElementastronomyhydrogenCorestarsstarElementsFusion