Posted by Jude on .
How much energy in KJ is release to form one mole of 123Sb from protons and neutrons if the atom has a mass of 122.90422 amu? Please remember to include the mass of electrons in calculations.
Havent been taught this yet so a step by step walkthrough would help me immensely.Thanks in advance

Chemistry 
Jude,
Can anyone help me with this question? Thanks