I am not sure where you are going with your model but be careful when dealing with the atom even the nucleus is a bit tricky.

background reading

http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/nspin.html


The problem was in science we expected the proton spin to balance exactly to the opposite of the electron spin ... science got a big shock when it wasn't. The bigger shock was that neutrons had a big magnetic moment.

Proton: g = 5.5856912 +/- 0.0000022
Neutron: g = -3.8260837 +/- 0.0000018


As the article discuss now we understand the quark model of the neutron/proton interactions it makes sense but you need to be careful when trying to do any calculations using classic physics.

So you need to break the problem down sort of like this if you want to use classic physics







AND ALWAYS REMEMBER THIS IS A SIMPLIFICATION TO BE ABLE TO USE CLASSIC PHYSICS BE CAREFUL WITH ANY CONCLUSIONS

I believe in "Evil, Bad, Ungodly fantasy science and maths", so I am undoubtedly wrong to you.