This is weird and confusing.
Isn't it true that protons, neutrons, and electrons, being fermions, cannot form a Bose-Einstein Condensate as they prohibited by the Pauli exclusion principle from occupying the same quantum state? - and that only bosons can do this.
Ok, I found something in Wikipedia:
"Particles composed of a number of other particles (such as protons, neutrons or nuclei) can be either fermions or bosons, depending on their total spin. Hence, many nuclei are in fact bosons. So even though the main three massive subatomic particles i.e. the proton, neutron, and electron are all fermions, it is possible for a single element such as helium to have some isotopes that are fermions (e.g. 3He) and other isotopes that are bosons (e.g. 4He). (3He) is composed of one neutron and two protons [PNP]. Likewise, the deuteron (2H), which is composed of one proton plus one neutron [NP] is a boson, while the triton (3H), which is composed of two neutrons plus one proton [NPN] is a fermion. The deuterium atom composed of three fermions (proton+neutron+electron)is a fermion, while its nucleus [NP] when separated from the electron is a boson."
It's still confusing though!
