( ( ( Atomic ( Mass ( The ( Atomic Mass ) ) ) ) ( of ( an atom ) ) ) ( ( is ( ( ( the ( total number ) ) ( of ( ( protons and ) neutrons ) ) ) ( which ( are ( present ( in ( ( the nucleus ) ( of ( the atom ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Atomic) (NNP Mass) (NNP The) (NNP Atomic) (NNP Mass)) (PP (IN of) (NP (DT an) (NN atom)))) (VP (VBZ is) (NP (NP (DT the) (JJ total) (NN number)) (PP (IN of) (NP (NNS protons) (CC and) (NNS neutrons))) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (ADJP (JJ present) (PP (IN in) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (DT the) (NN atom))))))))))) (. .)))
Atomic Mass The Atomic Mass of an atom is the total number of protons and neutrons which are present in the nucleus of the atom.
(ROOT (S (NP (NP (DT The) (NN mass)) (PP (IN of) (NP (NNS atoms)))) (VP (VBZ is) (VP (VBN based) (PP (IN on) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NNS protons) (CC and) (NNS neutrons))))) (PP (IN in) (NP (NN nucleus))))) (. .)))