( ( Individual ( chemical elements ) ) ( ( can ( ( create ( ( more stable ) ( electron configurations ) ) ) ( by ( combining ( to ( share ( their electrons ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Individual) (NN chemical) (NNS elements)) (VP (MD can) (VP (VB create) (NP (ADJP (RBR more) (JJ stable)) (NN electron) (NNS configurations)) (PP (IN by) (S (VP (VBG combining) (S (VP (TO to) (VP (VB share) (NP (PRP$ their) (NNS electrons)))))))))) (. .)))
Individual chemical elements can create more stable electron configurations by combining to share their electrons.
(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)))))) (. .)))