27477
Examination of the Mulliken populations at the HF / AVTZ level for ClFn ( + ) and SFn species predicts that the F atom in the axial ( recoupled pair bonding ) position is more highly charged than the F atom in the equatorial ( covalent bonding ) position ; there is also less change transfer to the F atoms in ClFn ( + ) than in SFn .
 HF, ClFn ( + ), SFn, F, F, F, ClFn ( + ), SFn
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 HF, ClFn ( + ), SFn, F, F, F, ClFn ( + ), SFn