Multiple choice general knowledge science & technology

In a massive dying star that form red supergiants, elements higher in atomic number than Hydrogen & Helium also starts fusion due to crushing pressure of the star's own gravitation & form elements of higher atomic number & it continues recursively. Which is the element that is formed last with the maximum atomic number this way & heavier atoms beyoond this are formed in trace amounts only?

  1. Iron

  2. Prometheum

  3. Barium

  4. Krypton
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A Correct answer
Explanation

In massive stars, fusion progresses from hydrogen to helium through increasingly heavier elements, culminating in iron (Fe-56). Iron has the highest binding energy per nucleon, so fusion beyond iron requires energy input rather than releasing it. Elements heavier than iron form primarily through neutron capture during supernovae, not normal stellar fusion.

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