Electric and gravitational potential energy in deuterium nucleus

[VHP_KLJ]

1. Is it possible to caculate the electric potential energy and the gravitational potential energy between two nucleon of deuterium (1 proton, 1 neutron), if we know the binding energy of deuterium is 2.23 (MeV), and the distance between them is 1 (fm)?
Please help me! I'm really confused about this exercise :(
Thanks in advance



2. Homework Equations :



3. The Attempt at a Solution
Can i use the liquid drop model to solve this exercise?

 

[VHP_KLJ]

Anyone can answer my question?