Assertion list for term "fill their outermost shells".

Results from Ascent++: 4
electron (aspect of atom) CapableOffill their outermost shells 0.28
electron (aspect of hydrogen) CapableOffill their outermost shells 0.25
electron (aspect of hydrogen atom) CapableOffill their outermost shells 0.25
electron (aspect of ion) CapableOffill their outermost shells 0.25