Achieve Homework #3, Question #16

[trishaferrer]

Hello! Is it okay if I could get help with this? Thanks!

[Nika Kononov 3E]

A, B, C, and E do not show possible bonds between hydrogen and an element with a large electronegativity such as F, O, or N therefore hydrogen bonds cannot form at these sites. The hydrogen at site F is bonded to a carbon and as hydrogen and carbon share electrons relatively equally, this hydrogen is not slightly positive, therefore a bond between the H and O at site F would not be a hydrogen bond. In a hydrogen bond, H needs to be bonded to F, O, or N and the H needs to be slightly positive to be attracted to the slightly negative F, O, or N. When hydrogen bonds to nitrogen, the more electronegative nitrogen "pulls at" the hydrogen's electron strongly, making the hydrogen have a slightly positive charge allowing a hydrogen bond to form between the hydrogen and oxygen at site D.