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+//ques-20.11
+//Calculating binding energy for He
+clc
+mp=1.007825;//mass of proton (in amu)
+me=0.0005852;//mass of electron (in amu)
+mn=1.008668;//mass of neutron (in amu)
+M=4.0039;//atomic mass of He (in amu)
+dm=2*mp+2*mn+2*me-M;//mass defect
+BE=dm*931;
+printf("The binding energy for He is %.4f Mev.",BE);