[at_a_remove]

No. Protons weigh less than neutrons. What will your proton decay into?

Be careful to remember your conservation of baryon number when listing your options!

[dotopotoro]

Edit: If neutron is likely to decay into. Why *neutrons* dont decay while being part of an atom? (Wouldn’t this be example of a structure that prevents decaying?)

[lisper]

https://profmattstrassler.com/articles-and-posts/particle-ph...