Assertion: ion's proton | /r/CapableOf | lose sufficient velocity
Facets:
value: in order to become bound
type: PURPOSE
value: in order to become associated
type: PURPOSE
Source sentences:
text: Although protons have affinity for oppositely charged electrons, this is a relatively low-energy interaction and so free protons must lose sufficient velocity (and kinetic energy) in order to become closely associated and bound to electrons.