The nuclear binding energy of one nitrogen-14 atom is (BLANK) x 10A J. Round to 3

significant digits.

What is the answer to the blank?

mass defect = mass of constituents - mass of atom

N has 7p and 9n

proton mass ~ 1.00728 amu

neutron mass ~ 1.00866 amu

electron mass ~ 0.000549 amu

Nitrogen mass ~ 14.003074 amu

mass defect = (7*1.00728) - (7*1.00866) - (7*0.000549) - 14.003074

= 0.11235amu

convert to energy, the binding energy = 1.68x10^-11 J