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Yes and No. This really depends on what you mean.

If you are talking about a single event, the fission of a uranium atom typically releases about 200 million electron volts (MeV). By contrast, the fusion of a deuterium atom with a tritium atom produces about 17.6 MeV. This would seem to mean that fission produces more energy. And it does - per event.

On the other hand, a deuterium atom has an Atomic Mass of 2, and a tritium atom has an atomic mass of 3. So the fusion involving an atomic mass of 5 produces 17.6 MeV. If we had 47 of these, the total mass would be about 235 (roughly the same as 235U) and the result would be 47x17.6 or 827.2. By contrast, 235U has an atomic mass of roughly 235. And the fission involving the atomic mass of 235 produces 200 MeV. This means that the fusion of an equal mass produces (in this particular comparison) a bit more than four times as much power. So fusion can be more powerful - by mass.

But fusion of elements more massive than iron is endothermic. So it is always less powerful than fission.

Also, there is a practical consideration, if you are interested in practicalities. And this relates to the amount of fuel available. We will run out of uranium and thorium ores. When that happens, fission power will no longer be possible. We will possibly never run out of fuel for fusion fuels. So fusion is a more powerful power source over time. But of course, by this standard, wind is more powerful than fission, because we will run out of the ores, but the wind will just blow on and on.

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14y ago
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13y ago

As a general rule, nuclear fusion releases energy when atoms smaller than lead-206 are fused with other atoms, and fusion requires energy to fuse atoms larger than lead-206 with other atoms. And as a general rule, nuclear fission releases energy when atoms larger than lead-206 are split, and fission requires energy when atoms smaller than lead-206 are split. Lead-206 itself is stable, and it requires energy to either split it or fuse it with another atom.

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10y ago

nuclear fusion produces more energy than fission ☻M.H&A.A
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Per unit mass, nuclear fusion creates energy 400 times more than nuclear fission.

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13y ago

Fusion by a long shot, that is what powers the sun and the stars.

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13y ago
  • per fission/fusion event - fission gives more energy
  • per unit of fuel mass - fusion gives more energy
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10y ago

Energy produced by nuclear fusion is much greater than (by around 400 times) energy produced by nuclear fission per unit mass.

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12y ago

Fusion

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15y ago

fusion

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Q: What produces more energy fusion or fission?
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Continue Learning about Chemistry

Compare and contrast fusion and fission?

With nuclear fission, a large atomic nucleus (such as a uranium nucleus) breaks apart into smaller nuclei, and energy is released. With nuclear fusion, small atomic nuclei (such as hydrogen) join to become larger nuclei, and energy is released. Fusion of hydrogen releases much more energy than any other type of either fusion or fission. Note that the dividing line between heavy nuclei and light nuclei is the iron nucleus, which is at the perfect point of nuclear stability, so that neither fusion nor fission of iron nuclei would release any energy.


What is nuclear bombs made up of?

active material (fissile and/or fusible materials)conventional explosiveselectronics (timing/firing circuits, fusing circuits, arming/safeing circuits, permissive action link or equivalent)metal and/or composite ballistic casing (might be steel or aluminum, in missile warheads an ablative resin/fiber composite heat shield is used too)etc.The active material provides the nuclear energy of the weapon. For fission bombs it is either Uranium or Plutonium. For fusion bombs it is normally Lithium Deuteride. There are many bomb designs that combine fission and fusion: a boosted fission bomb uses a hollow sealed fissile core that is filled with either deuterium gas, tritium gas, or a mix of both to get a small fusion yield, which causes a higher fission yield; the traditional fusion bomb involves several "cycles" of fission and fusion to work resulting in it usually being referred to as a fission-fusion-fission bomb, with typically 90% or more of its yield actually coming from the final fission step (not fusion).


What is an alternate energy source produced from atomic reaction?

Nuclear fission is when a neutron is fired at an element with a high atomic number, which splits and releases more neutrons and energy as a result. Nuclear fusion occurs in stars and experimental reactors.


Why is carbon fission not possible?

Nuclear fission can only occur in heavy, unstable nuclei, as smaller nuclei are, on the whole, more stable than the largest ones. This only continues down to iron. In elements lighter than iron the heavier nuclei tend to be more stable, so splitting apart a carbon nucleus would absorb energy rather than releasing it. Fusion of carbon releases energy. Such fusion occurs in the cores of some massive stars as they enter their final stages.


Why does not law of conservation of energy apply to the nuclear reactions?

A percentage of the matter is liberated as energy. Fusion reactions tend to convert more mass to energy than do fission reactions. Proton and neutron counts are preserved, but the mass of a helium nucleus is less than the rest mass of the particles of which it is comprised--two neutrons and two protons. The difference is known as the "mass defect," and is equivalent to the energy released in a fusion reaction. Similarly, fission reactions (the splitting apart of atomic nuclei) also liberates energy in a variety of forms. Note: Mass/Energy is conserved in ANY reaction. But as mass may be converted into energy, and vice versa, the mass itself is not necessarily conserved.

Related questions

For each gram of reactant fusion produces energy than fission?

For each gram of reactant fusion produces more energy than fission.


Which is more strong in producing energy the fusion or the fission?

Fusion produces energy more than fission by around 400 times for same mass.


For each gram of reactant fusion produces what energy than fission?

Fusion produces energy more than fission by around 400 times for same mass.


What isdifference nuclear fission and nuclear fission?

The difference between Fusion and Fission is that Fission is easier to do and produces more energy than fusion reactions. However fission can be dangerous and is used in Nuclear reactors. Fusion however is safer and produces less energy but safely. It is quite difficult to cause a Fusion reaction however.


For each gram of reactan fusion produses what energy than fission?

Fusion produces energy more than fission by around 400 times for same mass.


Which is more powerful, fusion or fission?

It really depends on what you mean by what is more powerful. Fission is far more destructive in its capabilities, but fusion is less destructive and produces far more energy than fission.


What is a nuclearfusion?

Nuclear Fusion, not to be mistaken with Nuclear Fission, is a process in which energy is created due to the merging or "fusion" of subatomic particles. The process is much more energy efficient, and produces larger quantities of energy than in a fission based process.


Is a tomic bomb is an example of fusion or fission or annihilation?

An atomic bomb can be a fission bomb or a fusion bomb. Fusion bombs create more energy but fission bombs leave radioactive material and radiation.


Which provides more energy per gram of fuel fission or fusion?

Fusion by more than 400 times.


How nuclear fusion differ to nuclear fission in terms of energy release?

Energy from nuclear fusion is around 400 times more than that of nuclear fission for same mass.


Compare and contrast nuclear fission and nuclear fu sion?

Fission is when two particles are split to make energy while fusion combines to particles. The result of fission is usually used up radioactive material while fusion results in helium. Fusion makes more energy than fission


What is fusion and fission related to?

Fusion and fission is related to combining (fusion) or splitting (fission) radioactive nuclei, in both cases releasing binding energy (The Strong Atomic Force). Fission is more commonly used in nuclear power plants and A-Bombs, while fusion is more commonly used in H-Bombs and in the Stars.