Binding Energy Calculator
Calculate nuclear binding energy: BE = mass_defect x 931.5 MeV/amu.
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Enter the mass defect in atomic mass units (amu) and the total number of nucleons (protons + neutrons). The calculator converts mass defect to binding energy using 1 amu = 931.5 MeV and also gives binding energy per nucleon.
About the Binding Energy Calculator
Nuclear binding energy is the energy required to completely disassemble a nucleus into separate protons and neutrons. It comes from the mass defect via E = mc^2. Binding energy per nucleon is the key to understanding nuclear stability, fusion, fission, and the energy output of stars.
Frequently Asked Questions
What is binding energy per nucleon?
Binding energy per nucleon is the total binding energy divided by the number of nucleons (protons + neutrons). It peaks at iron-56 (~8.8 MeV/nucleon), which is why iron is the most stable nucleus.
Why is iron the most stable element?
Iron-56 has the highest binding energy per nucleon. Lighter nuclei can gain stability by fusion (moving toward iron), and heavier nuclei can gain stability by fission (also moving toward iron). This explains why both fusion and fission release energy.
How is binding energy related to nuclear reactions?
Energy released in nuclear reactions equals the difference in binding energies between products and reactants. Fusion of light elements and fission of heavy elements both produce products with higher binding energy per nucleon.