# 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.

#### β+ decay:

116C→115X+e++ν

e+= Positron

ν= Neutrino

As 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]c2

We have c2=931.5MeV/amu

=0.002129×931.5MeV

=1.983 MeV