B.E \(=\Delta mc ^2=(\) mass of nucleons-mass of nucleus \() c ^2\)
where \(\Delta m =\) mass defect
Number of protons in \({ }_8 O ^{17}, p =8\)
Number of neutrons in \({ }_8 O ^{17}, n =17-8=9\)
Hence, binding energy of \({ }_8 O ^{17}\),
\(\text { B.E. }=\left(8 M_p+9 M_n-M_0\right) c^2\)