( ( In ( metallic bonding ) ) ( , ( ( the ( valence electrons ) ) ( ( ( are not ) ( ( ( located anywhere ) , ) ( so ( to speak ) ) ) ) ; ) ) ) )
(ROOT (S (PP (IN In) (NP (JJ metallic) (NN bonding))) (, ,) (NP (DT the) (JJ valence) (NNS electrons)) (VP (VBP are) (RB not) (VP (VBN located) (ADVP (RB anywhere)) (, ,) (ADVP (RB so) (S (VP (TO to) (VP (VB speak))))))) (: ;)))
In metallic bonding, the valence electrons are not located anywhere, so to speak;
(ROOT (S (NP (JJ Metallic) (NNS bonds)) (VP (VBP hold) (PRT (RP together)) (NP (NP (JJ positive) (NN metal) (NNS ions)) (CC and) (NP (PRP$ their) (JJ valence) (NNS electrons)))) (. .)))