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in stars greater than about nine times that of the Sun, the production of heavy elements and release of energy by nuclear fusion occurs until iron is formed. Explain why fusion of elements heavier than iron cannot power the star beyond this point.
5 stars who answer me well
in stars greater than about nine times that of the Sun, the production of heavy elements and release of energy by nuclear fusion occurs until iron is formed. Explain why fusion of elements heavier than iron cannot power the star beyond this point.
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When a massive star undergoes it's fusion sequence H into He into C etc. and eventually reaches iron, it collapses. Iron takes up energy when it fuses and so there is no outward force to support the inward force of gravity. The outside of the star then collapses inward, causing heating and causing a rebound effect which throws the outer layers into space
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Beyond iron in weight, fusion absorbs rather than emits energy.
The energy density required for the production of elements heavier than iron
occurs only in stellar collapse/nova events.
The energy density required for the production of elements heavier than iron
occurs only in stellar collapse/nova events.
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Iron Maiden got tired