( ( Be ( able ( to ( explain ( ( the ( electron configuration ) ) ( that ( determines ( ( an ( elements position ) ) ( in ( the table ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Be) (ADJP (JJ able) (S (VP (TO to) (VP (VB explain) (NP (NP (DT the) (NN electron) (NN configuration)) (SBAR (WHNP (WDT that)) (S (VP (VBZ determines) (NP (NP (DT an) (NNS elements) (NN position)) (PP (IN in) (NP (DT the) (NN table))))))))))))) (. .)))
Be able to explain the electron configuration that determines an elements position in the table.
(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)))))) (. .)))