( ( ( Determine ( ( the number ) ( of ( protons ( , ( neutrons ( , ( and electrons ) ) ) ) ) ) ) ) ( in ( an ( ( atom or ) ion ) ) ) ) . )
(ROOT (S (VP (VB Determine) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NNS protons) (, ,) (NNS neutrons) (, ,) (CC and) (NNS electrons)))) (PP (IN in) (NP (DT an) (NN atom) (CC or) (NN ion)))) (. .)))
Determine the number of protons, neutrons, and electrons in an atom or ion.
(ROOT (S (NP (NP (DT The) (NN chemistry)) (PP (IN of) (NP (DT each) (NN element)))) (VP (VBZ is) (VP (VBN determined) (PP (IN by) (NP (NP (PRP$ its) (NN number)) (PP (IN of) (NP (NNS protons) (CC and) (NNS electrons))))))) (. .)))