( ( ( The ( ground-state ( electron configuration ) ) ) ( of ( element ( 184 ( -LRB- ( unoctquadium -RRB- ) ) ) ) ) ) ( ( is ( ( ( expected ( to ( be ( ( only ( the ( 8d ( and ( 7f electrons ) ) ) ) ) ( should ( be ( chemically active ) ) ) ) ) ) ) , ) ( with ( ( possible reasons ) ( being ( ( ( small ( radial extension ) ) and ) ( large ( binding energy ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ ground-state) (NN electron) (NN configuration)) (PP (IN of) (NP (NN element) (CD 184) (-LRB- -LRB-) (NN unoctquadium) (-RRB- -RRB-)))) (VP (VBZ is) (VP (VBN expected) (S (VP (TO to) (VP (VB be) (NP (NP (RB only) (DT the) (JJ 8d) (CC and) (JJ 7f) (NNS electrons)) (SBAR (S (VP (MD should) (VP (VB be) (ADJP (ADVP (RB chemically)) (JJ active)))))))))) (, ,) (PP (IN with) (NP (NP (JJ possible) (NNS reasons)) (VP (VBG being) (NP (NP (JJ small) (JJ radial) (NN extension)) (CC and) (NP (JJ large) (VBG binding) (NN energy)))))))) (. .)))
The ground-state electron configuration of element 184 (unoctquadium) is expected to be only the 8d and 7f electrons should be chemically active, with possible reasons being small radial extension and large binding energy.
(ROOT (S (NP (NP (DT The) (JJ chemical) (NN behavior)) (PP (IN of) (NP (NNS elements)))) (VP (MD can) (ADVP (RB largely)) (VP (VB be) (VP (VBN explained) (PP (IN by) (NP (NN electron) (NNS configurations)))))) (. .)))