( ( ( The force ) ( of ( attraction ( between ( these ( opposite charges ) ) ) ) ) ) ( ( ( ( holds ( the ions ) ) together ) ( in ( an ( ionic bond ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN force)) (PP (IN of) (NP (NP (NN attraction)) (PP (IN between) (NP (DT these) (JJ opposite) (NNS charges)))))) (VP (VBZ holds) (NP (DT the) (NNS ions)) (ADVP (RB together)) (PP (IN in) (NP (DT an) (JJ ionic) (NN bond)))) (. .)))
The force of attraction between these opposite charges holds the ions together in an ionic bond .
(ROOT (S (NP (DT A) (-LRB- -LRB-) (NN n) (-RRB- -RRB-) (NN chemical) (NN bond)) (VP (VBZ is) (NP (NP (DT a) (NN force)) (PP (IN of) (NP (NP (NN attraction)) (PP (IN between) (NP (NNS ions) (CC and) (NNS atoms))))))) (. .)))