Question

Compute the mass defects of (a) 32S; (b) 20F; (c) 238U. 

Answer 1

a)

$$\Delta m=((16)1.00727+(32-16)1.00865)\\-31.972071=0.28265\ amu$$

b)

$$\Delta m=((9)1.00727+(20-9)1.00865)\\-19.99998=0.1606\ amu$$

c)

$$\Delta m=((92)1.00727+(238-92)1.00865)\\-238.05079=1.88095\ amu$$