Subject	ionization energy
Predicate	tend
Object	to decrease from top to bottom within a group
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.7606
Neighborhood Sigma	0.8089
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source ionization energy tends to decrease from top to bottom within a group 1 Answers.com Questions ionization energy tend to decrease from top to bottom within a group 2 Answers.com Questions