A hydrogen bond is created between two molecules due to what?

Answer 1

When hydrogen is attached to a highly electronegative atom such as oxygen or nitrogen, the atom pulls the hydrogen's electron away from its nucleus causing the hydrogen atom to have a strong positive charge and the other atom to have a strong negative charge. Negatively charged atoms on other molecules are attracted to the strong positive charge of the hydrogen molecule (opposites attract), and the positively charged atoms are attracted to the negatively charged atoms.

Answer 2

The h atom bonded to the o is highly electron deficient due to the o atom being highly electronegative. As a result it would form partial bonds with the lone pairs on O atoms on neighbouring molecules.

Answer 3

Water molecules are (as I would hope you know) composed of 2 hydrogen and 1 oxygen atom. The oxygen atom however has a much higher electronegativity than the hydrogen atoms and so it pulls the single electrons much closer to it, making the hydrogen atoms act similar to protons (positive charged nucleus).

Now you have to look at the structure of the molecule. Oxygen has 6 valence electrons, so it will have 1 each bonded with each of the hydrogen atoms with 4 left over. These 4 are then broken up into 2 electron pairs. Basically, 8 electrons (2 from hydrogen and 6 from oxygen) try to move as far from each other as possible while staying on surface of oxygen. This makes a tetrahedral shape, with 2 pairs acting as highly positive charged protons and 2 acting as highly negative electrons. When you throw a bunch of these molecules together, the positive side will be attracted to the negative, forming hydrogen bonds.

Answer 4

hydrogen bonding occurs in hydrogen atoms and other molecules. Since oxygen has a very high electronegativity, it has a powerful attractionto hydrogen atoms and thus mking water a very cohesive and adhesuive property

Answer 5

The hydrogen bond between two water molecules arises because of their polarity. In this type of chemical bond, electrons in the molecules are shared unequally.

Answer 6

These are formed because of the very strong attraction between oxygen with two lone pairs and hydrogen molecule of water.............

Answer 7

The hydrogen bond is of electrostatic nature, an attraction between the cation H+ and an anion.

Answer 8

Polar.