Hydrogen flouride and ammonia....?

Question

Account for the fact that hydrogen flouride and ammonia can only form on average one hydrogen bond per molecule but water can form two. How does this fact lead to an explanation of the structure of ice?

OMG I'm only a first year lol I have no idea :'( Are there any Chemistry tutors out there??

Answer 1

Try http://www.edinformatics.com/math_science/info_water.htm

Bear in mind the H-F has only one bond and is strongly ionic and NH3 has three.

Answer 2

THe answer is a bit complicated, (and im not so good at english but il try ) when u have water at example 20°c the density is less than the density of water at 10°c, at 20°c the moleculous of water can "travel" more confortly, the distance between the molecules is bigger, so the hidrogen bond is less active( u got to know that the hidrogen bond is an space bond, it means that it has to have it own lenght and direction), or u can say that the lenght between the moleculus are bigger than the bond. Now that u (i hope) u understand that, when cooling the water u go 20-19-18...6-5-4°c, 4°c is the piont of infleksion (the anomaly of water), becose cooling the water the distance between moleculus is going smaller and smaller but when u arrive at 4°c the distance wont get smaller becose od the hidrogen bond, it will not tolerate more. becose as i sayd the hidr. bond is an space bond. look, im going to post u some drawings at this site so in 5 mins go and see that i think it will get clear. http://www.duje.spajanje.com/ the name will be chemistry

Answer 3

hydrogen fluoride is one of the most dangerous chemicals to the human body, if experimenting us thick rubber gloves an respirator if you value your life and bones.

Answer 4

hydrogen fluoride is one of the most dangerous chemicals to the human body, if experimenting us thick rubber gloves an respirator if you value your life and bones.

Answer 5

Because of only one lone pair of electrons.