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Q.

What is fusion and fission in context of atomic theory ... ???

Tags: science, technology, atomic theory
Asked by Manoj M, 30 Jan '13 11:06 am
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Answers (6)

1.

Fusion is the bonding of atomic nuclei or nuclear particles (nucleons - protons and neutrons) to make "bigger" or "heavier" atomic nuclei. Fission, on the other hand is the splitting of the atom. As the atoms fuse or split they release energy. Lots of it. And most of it is heat energy. In nuclear weapons, the energy is released "all at once" to create a blast. If the energy is released in a "controlled" way, we can release heat at a "useable" rate and apply it to boiling water to make steam.
Answered by joyesh chakraborty, 30 Jan '13 03:32 pm

 
  
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2.

Fusion is the bonding of atomic nuclei or nuclear particles (nucleons - protons and neutrons) to make "bigger" or "heavier" atomic nuclei. Fission, on the other hand is the splitting of the atom. As the atoms fuse or split they release energy. Lots of it. And most of it is heat energy. In nuclear weapons, the energy is released "all at once" to create a blast. If the energy is released in a "controlled" way, we can release heat at a "useable" rate and apply it to boiling water to make steam.
Answered by LIPSIKA, 30 Jan '13 11:09 am

 
  
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3.

In nuclear physics, nuclear fusion is a nuclear reaction in which two or more atomic nuclei collide at very high speed and join to form a new type of atomic nucleus (e.g. The energy that the Sun emits into space is produced by nuclear reactions that happen in its core due to the collision of hydrogen nuclei and the formation of helium nuclei). During this process, matter is not conserved because some of the mass of the fusing nuclei is converted to photons which are released through a cycle that even our sun uses. Fusion is the process that powers active stars
Fission is a splitting of something into two parts
Answered by jameel ahmed, 30 Jan '13 11:08 am

 
  
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4.

Fusion:Hydrogen Bomb,Fission:Atom Bomb.
Answered by amitava duttamajumdar, 31 Jan '13 08:53 pm

 
  
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5.

Nuclear Fission: Basics
When a nucleus fissions, it splits into several smaller fragments. These fragments, or fission products, are about equal to half the original mass. Two or three neutrons are also emitted.
Nuclear Fission
The sum of the masses of these fragments is less than the original mass. This 'missing' mass (about 0.1 percent of the original mass) has been converted into energy according to Einstein's equation.
Fission can occur when a nucleus of a heavy atom captures a neutron, or it can happen spontaneously.
Nuclear Fusion

Nuclear Fusion
Nuclear energy can also be released by fusion of two light elements (elements with low atomic numbers). The power that fuels the sun and the stars is nuclear fusion. In a hydrogen bomb, two isotopes of hydrogen, deuterium and tritium are fused to form a nucleus of helium and a neutron. This fusion releases 17.6 MeV of energy. Unlike nuclear fission, there is no limit on the amount of the fusion that can occur.
Source: wiki say copy kiya
Answered by Ataur Rahman, 30 Jan '13 11:08 am

 
  
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6.

The physics of nuclear structure and construction/destruction of that nucleus. The big difference is fusion is the "building" of atomic nuclei, and fission is the "breaking" or "splitting" of atomic nuclei.
Fusion is the bonding of atomic nuclei or nuclear particles (nucleons - protons and neutrons) to make "bigger" or "heavier" atomic nuclei. Fission, on the other hand is the splitting of the atom. As the atoms fuse or split they release energy. Lots of it. And most of it is heat energy. In nuclear weapons, the energy is released "all at once" to create a blast. If the energy is released in a "controlled" way, we can release heat at a "useable" rate and apply it to boiling water to make steam.
In fusion, protons or neutrons or the nuclei of atoms are forced together and are fused to make a new atomic nucleus. The release of lots and lots of energy accompanies this reaction. That's what powers stars. Currently we can't really do any fusion reactions to make useful power. There are a ...more
Answered by saranathan Narasimhan, 30 Jan '13 02:24 pm

 
  
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