Answer :

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It all begins with hydrogen fusion to helium and helium fusion to heavier elements like carbon and oxygen. However, the heaviest element that can be fused in the core of a star is known as iron and sometimes nickel, too.

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Answer:

The heaviest element which can be fused in the 'core of a star is iron'.

Explanation:

  • Throughout a stars lifetime, there is a 'continuous fusion reaction' going on in its core.
  • This reaction is fed by various elements present near the core of the star.
  • These elements can most probably be hydrogen, helium, carbon, oxygen, nickel, and iron.
  • When the star runs out of one elements, it uses the other to continue the fusion reaction going on in its core.