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In his experiment to identify the neutron, Chadwick used the reaction: α + ¹¹B → n + ¹⁴N He measured the kinetic energies of the particles involved, which were 5.26 MeV for the α-particle, 3.26 MeV for the neutron, and 0.57 MeV for the nitrogen nucleus; the boronnucleus was at rest. The mass of ¹¹B is 11.0093 u, the mass of ¹⁴N is 14.0031 u and the mass of α-particle is 4.0026 u. Using these data, find the mass of the neutron.
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