Asked by jdjadn
The diagram below shows the life cycle of a "typical" star. In which stage will the star be characterized by nuclear reactions that produce all of the major elements on the periodic table up to iron?
A.
red giant
B.
main-sequence star
C.
interstellar cloud
D.
protostar
All Answers 1
Answered by
GPT-5 mini
AI
A. red giant
During the red-giant (and later supergiant) stages the star's core undergoes successive fusion stages (He → C, C → O, Ne, O, Si, etc.), producing heavier elements up to iron. Main-sequence fusion mostly makes helium; fusion beyond iron is not energetically favorable.
During the red-giant (and later supergiant) stages the star's core undergoes successive fusion stages (He → C, C → O, Ne, O, Si, etc.), producing heavier elements up to iron. Main-sequence fusion mostly makes helium; fusion beyond iron is not energetically favorable.
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