nurtoni fu'ivla

x₁ is a neutron in quantum state x₂.

Cf. lektoni, protoni, kuarka, xumsle.

jbovlaste

In notes:

ratmidju: x₁=m₁ is the nucleus of atom x₂=m₂=r₁.
xumsle: s₁ is a molecule of chemical x₂.
lektoni: x₁ is an electron in quantum state x₂
protoni: x₁ is a proton in quantum state x₂.