( Nevertheless ( , ( ( the rule ) ( ( ( was not ) ( found ( to ( ( ( ( ( predict ( isotope masses ) ) better ) ( than ( ( this ( ( ( ( ( for ( all isotopes ) ) , ) due ) mostly ) ( to mass-defects ) ) ) ( resulting ( from ( release ( of ( ( binding energy ) ( in ( atomic nuclei ) ) ) ) ) ) ) ) ) ) , ) ( when ( they ( are formed ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Nevertheless)) (, ,) (NP (DT the) (NN rule)) (VP (VBD was) (RB not) (VP (VBN found) (S (VP (TO to) (VP (VB predict) (NP (JJ isotope) (NNS masses)) (ADVP (RBR better)) (PP (IN than) (S (NP (NP (DT this)) (PP (PP (IN for) (NP (DT all) (NNS isotopes))) (, ,) (RB due) (RB mostly) (PP (TO to) (NP (NNS mass-defects))))) (VP (VBG resulting) (PP (IN from) (NP (NP (NN release)) (PP (IN of) (NP (NP (VBG binding) (NN energy)) (PP (IN in) (NP (JJ atomic) (NNS nuclei)))))))))) (, ,) (SBAR (WHADVP (WRB when)) (S (NP (PRP they)) (VP (VBP are) (VP (VBN formed)))))))))) (. .)))
Nevertheless, the rule was not found to predict isotope masses better than this for all isotopes, due mostly to mass-defects resulting from release of binding energy in atomic nuclei, when they are formed.
(ROOT (S (NP (DT The) (NN octet) (NN rule)) (VP (VP (VBZ is) (NP (NP (DT a) (NN result)) (PP (IN of) (NP (NP (NNS trends)) (PP (IN in) (NP (NNS energies))))))) (CC and) (VP (VBZ is) (ADJP (JJ useful) (PP (IN in) (S (VP (VBG explaining) (SBAR (WHADVP (WRB why)) (S (NP (NNS atoms)) (VP (VBP form) (NP (DT the) (NNS ions)) (SBAR (IN that) (S (NP (PRP they)) (VP (VBP do))))))))))))) (. .)))