M p denotes the mass of a proton and M n that of a neutron. A given nucleus, of binding energy B , contains Z protons and N neutrons. The mass M ( N , Z ) of the nucleus is given by ( c is the velocity of light)

Question

M p denotes the mass of a proton and M n that of a neutron. A given nucleus, of binding energy B , contains Z protons and N neutrons. The mass M ( N , Z ) of the nucleus is given by ( c is the velocity of light), M ( N , Z ) = N M n + Z M p - B c 2, M N , Z = N M n + Z M p + B c 2, M ( N , Z ) = N M n + Z M p - B / c 2, M N , Z = N M n + Z M p + B / c 2

MARKS App · Accepted Answer

Mass defect = mass of nucleon - mass of nucleus B = Z M p + N M n - M N , Z c 2 ⇒ M ( M , Z ) = Z M p + N M n - B / c 2

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