Question

Which elements are formed during the red supergiant stage of a big star?

Answer 1

Carbon, Oxygen, Nitrogen, Silicon, Magnesium, Neon, Iron, and Nickel.

Explanation:

Note: Up to Iron all elements prior release energy when they are fused, but Iron needs energy to be fused, so after Iron & Nickel are created in the core, the end is near for the star.

(H=Hydrogen, He=Helium, C=Carbon, O=Oxygen, N=Nitrogen, Si=Silicon, Mg=Magnesium, Ne=Neon, Fe=Iron {Ni=Nickel}).