Difference between revisions of "Binding Energy"
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The [[Binding Energy|binding energy]] of a [[Atomic Nucleus|nucleus]] is the work that must be done to separate a [[Atomic Nucleus|nucleus]] into its constituent [[neutron]]s and [[proton]]s. | The [[Binding Energy|binding energy]] of a [[Atomic Nucleus|nucleus]] is the work that must be done to separate a [[Atomic Nucleus|nucleus]] into its constituent [[neutron]]s and [[proton]]s. | ||
| − | ===About Binding Energy of a Nucleus=== | + | ===About the Binding Energy of a Nucleus=== |
| − | *[[Binding Energy|Binding energy]] = [[Mass Defect|mass defect]] × [[Speed of Light| | + | *[[Binding Energy|Binding energy]] = [[Mass Defect|mass defect]] × [[Speed of Light|c]]². |
*[[Binding Energy|Binding energy]] [[measure]]d in [[MeV]]. | *[[Binding Energy|Binding energy]] [[measure]]d in [[MeV]]. | ||
| − | * | + | *[[Binding Energy|Binding energy]] indicates the stability of the [[Atomic Nucleus|nucleus]] with a higher [[Binding Energy|binding energy]] indicating a more stable [[Atomic Nucleus|nucleus]]. |
| − | * | + | *[[Binding Energy Per Nucleon|'''Binding energy''' per nucleon]] represents the [[energy]] required to disassemble a [[Atomic Nucleus|nucleus]] into individual [[nucleon]]s. |
| − | The curve of [[Binding Energy|binding energy | + | *The curve of [[Binding Energy Per Nucleon|'''binding energy''' per nucleon]] versus [[mass]] number shows a peak at [[iron]] (Fe-56). |
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===Examples=== | ===Examples=== | ||
| − | *[[Helium]]-4 has a high [[Binding Energy|binding energy | + | *[[Helium]]-4 has a high [[Binding Energy Per Nucleon|'''binding energy''' per nucleon]], making it very stable. |
*[[Nuclear Fusion|Nuclear fusion]] and [[Nuclear Fission|fission]] involve changes in [[Binding Energy|binding energy]], releasing [[Energy|energy]]. | *[[Nuclear Fusion|Nuclear fusion]] and [[Nuclear Fission|fission]] involve changes in [[Binding Energy|binding energy]], releasing [[Energy|energy]]. | ||
Latest revision as of 13:00, 22 May 2024
Key Stage 5
Meaning
The binding energy of a nucleus is the work that must be done to separate a nucleus into its constituent neutrons and protons.
About the Binding Energy of a Nucleus
- Binding energy = mass defect × c².
- Binding energy measured in MeV.
- Binding energy indicates the stability of the nucleus with a higher binding energy indicating a more stable nucleus.
- Binding energy per nucleon represents the energy required to disassemble a nucleus into individual nucleons.
- The curve of binding energy per nucleon versus mass number shows a peak at iron (Fe-56).
Examples
- Helium-4 has a high binding energy per nucleon, making it very stable.
- Nuclear fusion and fission involve changes in binding energy, releasing energy.