( ( most chemists ) ( ( agree ( that ( ( ( the difference ) ( in ( electronegativity ( between ( ( carbon and ) oxygen ) ) ) ) ) ( is ( insufficient ( to ( ( regard ( the bonds ) ) ( as ( being ( ionic ( in nature ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJS most) (NNS chemists)) (VP (VBP agree) (SBAR (IN that) (S (NP (NP (DT the) (NN difference)) (PP (IN in) (NP (NP (NN electronegativity)) (PP (IN between) (NP (NN carbon) (CC and) (NN oxygen)))))) (VP (VBZ is) (ADJP (JJ insufficient) (S (VP (TO to) (VP (VB regard) (NP (DT the) (NNS bonds)) (PP (IN as) (S (VP (VBG being) (ADJP (JJ ionic) (PP (IN in) (NP (NN nature))))))))))))))) (. .)))
most chemists agree that the difference in electronegativity between carbon and oxygen is insufficient to regard the bonds as being ionic in nature.
(ROOT (S (NP (NNP Oxygen)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN of) (NP (DT the) (JJ second) (ADJP (RBS most) (JJ electronegative)) (NN element))))) (. .)))