( ( All compounds ) ( ( will ( ( be neutral ) ( so ( ( ( the charge ) ( of ( the cations ) ) ) ( must ( equal ( ( the charge ) ( of ( the anions ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT All) (NNS compounds)) (VP (MD will) (VP (VB be) (ADJP (JJ neutral)) (SBAR (IN so) (S (NP (NP (DT the) (NN charge)) (PP (IN of) (NP (DT the) (NNS cations)))) (VP (MD must) (VP (VB equal) (NP (NP (DT the) (NN charge)) (PP (IN of) (NP (DT the) (NNS anions)))))))))) (. .)))
All compounds will be neutral so the charge of the cations must equal the charge of the anions.
(ROOT (S (NP (JJ Iconic) (NNS compounds)) (VP (VBP have) (NP (DT a) (JJ net) (JJ neutral) (NN charge))) (. .)))