Question

If a solid line represents a covalent bond and a dotted line represents intermolecular attraction, which of the choices shows a hydrogen bond?
1. H 3 N â â â â â â H â O â H
2. H 2 O â â â â â â H â CH 3
3. H â H H 4 C â â â â â â H â F

Answer 1

Answer:

If a solid line represents a covalent bond and a dotted line represents intermolecular attraction, which of the choices shows a hydrogen bond?

-N-------H-O-

-O------H-C-

-C-----H-F-

H-H

Of the options shown those that form hydrogen bonds are the following:

-N-------H-O-

-O------H-C-

Since they occur from the attraction in a hydrogen atom and an oxygen or nitrogen atom with a negative charge.

Explanation:

The hydrogen bridge or hydrogen bond force is the attractive electrostatic force between an electronegative atom and a hydrogen atom covalently bonded to another electronegative atom. It results from the formation of a charge-dipole force with a hydrogen atom attached to a nitrogen, oxygen or fluorine atom.

The hydrogen bond strength is located somewhere between a covalent bond and a Van der Waals force (dispersion force). This type of bonding occurs both in inorganic molecules such as water, and in organic molecules such as DNA.