( ( These electrons ) ( ( are ( arranged ( in ( shells ( about ( ( ( the nucleus ) , ) ( some ( ( being ( close ( to ( ( ( the nucleus ) , ) others ) ) ) ) ( far away ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These) (NNS electrons)) (VP (VBP are) (VP (VBN arranged) (PP (IN in) (NP (NP (NNS shells)) (PP (IN about) (NP (NP (DT the) (NN nucleus)) (, ,) (NP (NP (DT some)) (VP (VBG being) (ADJP (JJ close) (PP (TO to) (NP (NP (DT the) (NN nucleus)) (, ,) (NP (NNS others))))) (ADVP (RB far) (RB away)))))))))) (. .)))
These electrons are arranged in shells about the nucleus, some being close to the nucleus, others far away.
(ROOT (S (NP (DT An) (NN electron)) (VP (VBZ moves) (PP (TO to) (NP (NP (DT a) (NN shell)) (ADVP (RB farther) (PP (IN from) (NP (DT the) (NN nucleus)))))) (SBAR (IN after) (S (NP (PRP it)) (VP (VBZ absorbs) (NP (NN energy)))))) (. .)))