( ( Chalcophile elements ) ( ( are ( ( ( those metals ) and ) ( ( heavier nonmetals ) ( that ( ( ( have ( ( a ( low affinity ) ) ( for oxygen ) ) ) and ) ( ( prefer ( to bond ) ) ( with ( sulfur ( as ( ( highly insoluble ) sulfides ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Chalcophile) (NNS elements)) (VP (VBP are) (NP (NP (DT those) (NNS metals)) (CC and) (NP (NP (JJR heavier) (NNS nonmetals)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBP have) (NP (NP (DT a) (JJ low) (NN affinity)) (PP (IN for) (NP (NN oxygen))))) (CC and) (VP (VBP prefer) (PP (TO to) (NP (NN bond))) (PP (IN with) (NP (NP (NN sulfur)) (PP (IN as) (NP (ADJP (RB highly) (JJ insoluble)) (NNS sulfides)))))))))))) (. .)))
Chalcophile elements are those metals and heavier nonmetals that have a low affinity for oxygen and prefer to bond with sulfur as highly insoluble sulfides.
(ROOT (S (NP (NNS Nonmetals)) (VP (VBP have) (NP (NP (DT the) (JJS highest) (NN attraction)) (PP (IN for) (NP (NNS electrons))))) (. .)))