( ( ( An electron ) ( in ( a ( many ( electron atom ) ) ) ) ) ( is ( in ( ( an orbital ) ( with ( energy ( -5 ( x10 ( -19 J. ) ) ) ) ) ) ) ) )
(ROOT (S (NP (NP (DT An) (NN electron)) (PP (IN in) (NP (DT a) (JJ many) (NN electron) (NN atom)))) (VP (VBZ is) (PP (IN in) (NP (NP (DT an) (NN orbital)) (PP (IN with) (NP (NN energy) (NN -5) (NNP x10) (NNP -19) (NNP J.))))))))
An electron in a many electron atom is in an orbital with energy -5x10 -19 J.
(ROOT (S (NP (NP (NNS Electrons)) (PP (IN in) (NP (NP (JJ successive) (NNS atoms)) (PP (IN on) (NP (DT the) (JJ periodic) (NN table)))))) (VP (VBP tend) (S (VP (TO to) (VP (VB fill) (NP (JJ low-energy) (NNS orbitals)) (ADVP (RB first)))))) (. .)))