( ( is ( ( 1.66 * ) 10-27kg ) ) ( . ( ( Atomic ( Mass ( Number The ) ) ) ( ( Atomic ( ( ( Mass Number ) ( of ( an atom ) ) ) ( is ( ( the ( total number ) ) ( of ( ( ( protons and ) neutrons ) ( in ( ( the nucleus ) ( of ( the atom ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SQ (VBZ is) (ADJP (NP (CD 1.66) (NNS *)) (JJ 10-27kg))) (. .) (NP (NNP Atomic) (NNP Mass) (NNP Number) (NNP The)) (VP (VBD Atomic) (SBAR (S (NP (NP (NNP Mass) (NNP Number)) (PP (IN of) (NP (DT an) (NN atom)))) (VP (VBZ is) (NP (NP (DT the) (JJ total) (NN number)) (PP (IN of) (NP (NP (NNS protons) (CC and) (NNS neutrons)) (PP (IN in) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (DT the) (NN atom)))))))))))) (. .)))
is 1.66*10-27kg. Atomic Mass Number The Atomic Mass Number of an atom is the total number of protons and neutrons 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))))) (. .)))