Question

Fill in the Blank : The isotope $^{12}_5 {B}$ having a mass 12.014 u undergoes $\beta$-decay to $^{12}_6 {C} . ^{12}_6 {C}$ has an excited state of the nucleus( $^{12}_6 {C} ^*$ )at 4.041 MeV above its ground state. If $^{12}_5 {B}$ decays to $^{12}_6 {C} ^*$ , the maximum kinetic energy of the $\beta$-particle in units of MeV is . . . . . . . [$1 u = 931.5 MeV/c^{2}$, where c is the speed of light in vacuum.]

Answer 1

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