Which of the following is NOT a unit used to measure the binding energy of a nucleus?
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A.
Electron volt (eV)
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B.
Atomic mass unit (amu)
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C.
Joule (J)
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D.
Million electron volt (MeV)
Correct Answer:
B. Atomic mass unit (amu)
Explanation:
Binding energy represents the energy required to disassemble a nucleus into its constituent protons and neutrons. It is typically expressed in units of energy or mass-equivalent energy. The electron volt (eV) and million electron volt (MeV) are standard units of energy used in nuclear physics. The Joule (J) is the SI unit for energy and is also valid. However, the atomic mass unit (amu) is a unit of mass, not energy. While mass can be converted to energy using Einstein's equation (E=mc^2), the amu itself measures the mass of the particles rather than the binding energy. Therefore, the atomic mass unit is not a direct unit of measurement for binding energy.
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