What is the average binding energy per nucleon for Argon-40 (A=40, Z = 18) in MeV/nucleon? Note - keep 4 significant figures.
The answer is 8.595 but I'm not sure how to get to this answer.
me = mass of single electron = 0.0005486 amu
mp = mass of single proton = 1.007276 amu
mn = mass of single neutron = 1.008665 amu
M = mass of Argon = 39.9623831
mass defect is given as
m = [Z (me + mp) + (A - Z) mn] - M
m = [(18)( 0.0005486 + 1.007276) + (40 - 18)(1.008665)] - 39.9623831
m = 0.3691077
Binding energy per nucleon is given as
E = m (931.5)/A
E = (0.3691077) (931.5)/40
E = 8.595 MEV/nucleon
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