( ( An orbital ) ( ( can ( hold ( ( ( at most ) 2 ) electrons ) ) ) . ) )
(ROOT (S (NP (DT An) (NN orbital)) (VP (MD can) (VP (VB hold) (NP (QP (IN at) (JJS most) (CD 2)) (NNS electrons)))) (. .)))
An orbital can hold at most 2 electrons.
(ROOT (S (NP (DT The) (NN orbital)) (VP (VBZ is) (NP (NP (DT the) (NN area)) (SBAR (WHADVP (WRB where)) (S (NP (DT an) (NN electron)) (VP (VBZ is) (ADJP (RBS most) (JJ likely) (S (VP (TO to) (VP (VB be) (VP (VBN found))))))))))) (. .)))