( Thus ( , ( ( all ( carbon isotopes ) ) ( ( ( ( ( have ( nearly ( identical ( chemical properties ) ) ) ) ( because ( they ( all ( have ( ( ( six protons ) and ) ( six electrons ) ) ) ) ) ) ) , ) ( even ( though ( ( carbon atoms ) ( ( ( ( may , ) ( for example ) ) , ) ( have ( ( ( 6 or ) 8 ) neutrons ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Thus)) (, ,) (NP (DT all) (NN carbon) (NNS isotopes)) (VP (VBP have) (NP (RB nearly) (JJ identical) (NN chemical) (NNS properties)) (SBAR (IN because) (S (NP (PRP they)) (ADVP (DT all)) (VP (VBP have) (NP (NP (CD six) (NNS protons)) (CC and) (NP (CD six) (NNS electrons)))))) (, ,) (SBAR (RB even) (IN though) (S (NP (NN carbon) (NNS atoms)) (VP (MD may) (, ,) (PP (IN for) (NP (NN example))) (, ,) (VP (VB have) (NP (QP (CD 6) (CC or) (CD 8)) (NNS neutrons))))))) (. .)))
Thus, all carbon isotopes have nearly identical chemical properties because they all have six protons and six electrons, even though carbon atoms may, for example, have 6 or 8 neutrons.
(ROOT (S (NP (DT All) (NN carbon) (NNS atoms)) (VP (VBP have) (NP (CD six) (NNS protons))) (. .)))