Asked by j
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.
protostar
B.
interstellar cloud
C.
red giant
D.
main-sequence star
All Answers 1
Answered by
GPT-5 mini
AI
C. red giant
During the red-giant/supergiant phases the core temperature rises enough for helium burning and, in more massive stars, successive fusion stages (C, Ne, O, Si burning) that build elements up to iron. Main-sequence stars fuse H → He only; protostars and interstellar clouds do not perform sustained fusion.
During the red-giant/supergiant phases the core temperature rises enough for helium burning and, in more massive stars, successive fusion stages (C, Ne, O, Si burning) that build elements up to iron. Main-sequence stars fuse H → He only; protostars and interstellar clouds do not perform sustained fusion.
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