Could somebody tell me why HF can form only two hydrogen bonds though fluorine has three lone pair electrons?

Question

anonymous · Answer

because H do not have vacant orbital

anonymous · Answer

Isn't the image is like   ...(H-bond)...HF...(H-bond)...?
(you remind me that H doesn't have vacant orbital, thank you :)  
but i still feel confused why  the other two l.p. cannot form hydrogen bond with H.  could you help me?

anonymous · Answer

hmm.. do u know what is hydrogen bond.. what u know about this first tell me so that i can help you further

anonymous · Answer

in hydrogen bond formation the lone pair enter  into vacant orbital acc. to your ques. the rest  reamin as such there is no orbital. u alo heard about lone pair repulsion too .. u can ay may be due to thiss but the main reason is no vaccant orbital

anonymous · Answer

thank you very much ^^ i thought i know how to interpret it.

anonymous · Answer

yw