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The two nuclei's are lighter than iron then when they are fused together they will release energy.

If the two nuclei's are heavier than iron they will absorb energy when fused.

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10y ago

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How are elements with nuclei larger than iron nuclei formed?

Supernova form heavier elements


Where iron comes from?

Iron is fused within a star's core. When sufficient iron has accumulated and it begins to fuse, the energy of that fusion is too great and the star explodes creating all the heavier elements.up ya bum


Where is iron made mostly from?

Iron is fused within a star's core. When sufficient iron has accumulated and it begins to fuse, the energy of that fusion is too great and the star explodes creating all the heavier elements.up ya bum


Why is iron the only element that can be produced in stars?

All elements (except hydrogen) are produced in stars through nuclear fusion (under tremendous heat, two hydrogen atoms fuse into one helium plus release pure energy). When the hydrogen is all fused, helium is fused into heavier elements at a higher temperature, then those are fused and so on until we get to iron. Iron is the element that will cause a star to collapse and then explode violently in a supernova. The explosion causes further fusion and creates still heavier elements.


Which nuclear fuel is there in the sun?

At this point in time hydrogen is being fused into helium. Many, many years down the line, as the hydrogen runs out, the sun will begin fusing heavier and heavier elements for fuel. At least to iron.


What is heavier iron or silica?

Iron is heavier because iron is a metal and metals are heavier but silica is not a metal so silica is lighter than iron.


What atoms are heavier than iron?

Atoms heavier than iron are typically produced through processes like nuclear fusion in supernovae or in laboratories. Some examples include atoms like uranium, plutonium, and lead, which have more protons and neutrons in their nuclei compared to iron.


Explain how heavier elements are formed from hydrogen within the core of a star?

Heavier elements are formed through nuclear fusion reactions in the core of a star. Hydrogen atoms are fused together under high pressure and temperature to form helium. Further fusion reactions involving helium nuclei lead to the formation of heavier elements like carbon, oxygen, and up to iron. These elements are produced through a series of nuclear reactions that occur as the star evolves.


Is fusion an endothermic reaction?

It depends on what is being fused. Fusion usually takes place with elements lighter than iron, mostly hydrogen. in those cases it is exothermic. Fusin elements heavier than iron is endothermic.


Which is heavier iron filings or seawater?

Iron fillings are heavier.


What is the heviest element that can be made in stars center?

While it is still a star? Iron. Everything heavier must be fused from lighter elements in a supernova explosion, which blows the star apart.


Is iodine heavier than iron?

No, atomically Iron is a heavier element