Achieve #16

[Anahita_Shojaei_2D]

In this question, we are asked to identify the hydrogen bond. I get why D is a hydrogen bond, but it says F not one because an H bonded to a C cannot form a hydrogen bond. Why is this and should we just always assume if an H is bonded to a C it can never form a hydrogen bond?

[Raeesah A 1D]

Hydrogen bonds are between the electronegative atoms N, O, or F and another hydrogen atom that is bonded to N, O, or F. That's why D has a hydrogen bond, because the O atom has a hydrogen bond with the hydrogen that is bonded to a Nitrogen. However, for F the hydrogen is not bonded to N, O, or F but instead bonded to Carbon, meaning it can't have a hydrogen bond. So a hydrogen must be bonded to the electronegative atoms N, O, or F to have a hydrogen bond with another electronegative atom (N, O, or F).