( ( Since ( ( the ( Sodium ( and ( Chlorine atoms ) ) ) ) ( ( are now ) ( oppositely charged ) ) ) ) ( they ( ( attract ( ( ( each other ) and ) ( form ( what ( is ( called ( an ( ionic bond ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (SBAR (IN Since) (S (NP (DT the) (NNP Sodium) (CC and) (NNP Chlorine) (NNS atoms)) (VP (VBP are) (ADVP (RB now)) (VP (ADVP (RB oppositely)) (VBN charged))))) (NP (PRP they)) (VP (VBP attract) (NP (NP (DT each) (JJ other)) (CC and) (NP (NP (NN form)) (SBAR (WHNP (WP what)) (S (VP (VBZ is) (VP (VBN called) (NP (DT an) (JJ ionic) (NN bond))))))))) (. .)))
Since the Sodium and Chlorine atoms are now oppositely charged they attract each other and form what is called an ionic bond.
(ROOT (S (NP (NP (DT A) (-LRB- -LRB-) (NN n) (-RRB- -RRB-)) (NP (DT an) (JJ ionic) (NN bond))) (VP (VBZ forms) (SBAR (WHADVP (WRB when)) (S (NP (DT the) (NN metal) (NN sodium)) (VP (VBZ gives) (PRT (RP up)) (NP (DT an) (NN electron)) (PP (TO to) (NP (DT the) (JJ nonmetal) (NN chlorine))))))) (. .)))