( ( ( The ( atomic weight ) ) ( of ( any element ) ) ) ( ( ( is ( approximately ( equal ( to ( ( the ( total number ) ) ( of ( ( protons and ) neutrons ) ) ) ) ) ) ) ( in ( is nucleus ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ atomic) (NN weight)) (PP (IN of) (NP (DT any) (NN element)))) (VP (VBZ is) (ADJP (RB approximately) (JJ equal) (PP (TO to) (NP (NP (DT the) (JJ total) (NN number)) (PP (IN of) (NP (NNS protons) (CC and) (NNS neutrons)))))) (SBAR (IN in) (S (VP (VBZ is) (NP (NN nucleus)))))) (. .)))
The atomic weight of any element is approximately equal to the total number of protons and neutrons in is nucleus.
(ROOT (S (S (VP (TO To) (VP (VB determine) (NP (NP (DT the) (JJ atomic) (NN weight)) (PP (IN of) (NP (DT an) (NN element))))))) (, ,) (NP (PRP you)) (VP (MD should) (VP (VB add) (PRT (RP up)) (NP (NNS protons) (CC and) (NNS neutrons)))) (. .)))