The isotope 62(over)28Ni has the largest binding energy per nucleon of any isotope. Calculate this value from the atomic mass of nickel-62 (61.928345...

The isotope 62(over)28Ni has the largest binding energy per nucleon of any isotope. Calculate this value from the atomic mass of nickel-62 (61.928345 amu).Express your answer using six significant figures in J/Nucleon Here's what I got so far:Ni-62. has 28p and 34nthe mass of 1 proton = 1.00727647 amu the mass of 1 neutron = 1.00866492 amuso..for 1 nucleus... Δmass = 28x1.00727647amu + 34x1.00866492amu - 61.928345amu = 0.5700034 amu.. (with an extra sig fig)converting...via E = mc² E / nucleon = (0.5700034amu / nucleus) x (1.6605389x10^-27kg / 1amu) x (2.997924x10^8 m/s)² x (1 nucleus / 62 nucleons) = 1.37207x10^-12 J / nucleon BUT it was WRONG??