( ( ( ( ( The ( ( atoms and ) ions ) ) , ) ( which ( are ( bonded ( with ( ( each other ) ( with ( considerable ( interatomic forces ) ) ) ) ) ) ) ) ) , ) ( ( ( are not ) motionless ) . ) )
(ROOT (S (NP (NP (DT The) (NNS atoms) (CC and) (NNS ions)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (VP (VBG bonded) (PP (IN with) (NP (NP (DT each) (JJ other)) (PP (IN with) (NP (JJ considerable) (JJ interatomic) (NNS forces))))))))) (, ,)) (VP (VBP are) (RB not) (ADJP (JJ motionless))) (. .)))
The atoms and ions, which are bonded with each other with considerable interatomic forces, are not motionless.
(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))))))) (. .)))