( ( ( The ( Ionic Lattice ) ) ( In ( ( most ionic ) compounds ) ) ) ( , ( ( ( ( ( ( the anions ) ( are ( ( much larger ) ( than ( the cations ) ) ) ) ) , ) and ) ( it ( is ( ( the anions ) ( which ( form ( the ( crystal array ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (NP (DT The) (NNP Ionic) (NNP Lattice)) (IN In) (NP (ADJP (RBS most) (JJ ionic)) (NNS compounds))) (, ,) (S (NP (DT the) (NNS anions)) (VP (VBP are) (ADJP (ADJP (RB much) (JJR larger)) (PP (IN than) (NP (DT the) (NNS cations)))))) (, ,) (CC and) (S (NP (PRP it)) (VP (VBZ is) (NP (NP (DT the) (NNS anions)) (SBAR (WHNP (WDT which)) (S (VP (VBP form) (NP (DT the) (NN crystal) (NN array)))))))) (. .)))
The Ionic Lattice In most ionic compounds, the anions are much larger than the cations, and it is the anions which form the crystal array.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (VP (VBG naming) (NP (DT an) (JJ ionic) (NN compound))))) (, ,) (NP (DT the) (NN cation)) (VP (VBZ is) (VP (VBN written) (ADVP (RB first)))) (. .)))
When naming an ionic compound, the cation is written first.