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# Write symbolically the nuclear β+ decay process of 116C. Is the decayed product X an isotope or isobar of (116C)? Given the mass values m (116C) = 11.011434 u and m (X) = 11.009305 u. Estimate the Q-value in this process.

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#### β+ decay:116C→115X+e++νe+= Positronν= NeutrinoAs mass number of C and X are the same, C and X are isobars.Energy released Q=(mc−mx−me)c2=[(mc+116me)−(mx+115me)]c2=[mc−mx]c2=[11.011434−11.009305]c2We have c2=931.5MeV/amu=0.002129×931.5MeV=1.983 MeV

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