( Thus ( , ( ( the ( atomic orbitals ) ) ( ( are ( ( diffuse regions ) ( in ( space ( around ( ( the nucleus ) ( of ( ( an atom ) ( ( in which ) ( ( the electrons ) ( are ( most ( likely ( to ( be found ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Thus)) (, ,) (NP (DT the) (JJ atomic) (NNS orbitals)) (VP (VBP are) (NP (NP (JJ diffuse) (NNS regions)) (PP (IN in) (NP (NP (NN space)) (PP (IN around) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (NP (DT an) (NN atom)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (DT the) (NNS electrons)) (VP (VBP are) (ADJP (RBS most) (JJ likely) (S (VP (TO to) (VP (VB be) (VP (VBN found))))))))))))))))) (. .)))
Thus, the atomic orbitals are diffuse regions in space around the nucleus of an atom in which the electrons are most likely to be found.
(ROOT (S (NP (DT The) (NN orbital)) (VP (VBZ is) (NP (NP (DT the) (NN region)) (VP (VBN called) (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)))))))))))) (. .)))