The attraction between hydrogen molecules with a partial positive charge and another atom or molecule with a partial negative charge is called hydrogen bonding.

Here's a breakdown:

* Polar Covalent Bonds: Hydrogen bonds form between molecules that have polar covalent bonds. In these bonds, electrons are shared unequally between the atoms.

* Partial Charges: The atom with higher electronegativity (attracts electrons more strongly) gains a partial negative charge (δ-), while the other atom gains a partial positive charge (δ+). For example, in a water molecule (H₂O), oxygen is more electronegative than hydrogen, giving oxygen a δ- and hydrogen a δ+.

* Hydrogen Bonding: The partially positive hydrogen atom (δ+) from one molecule is attracted to the partially negative atom (δ-) of another molecule. This attraction is called a hydrogen bond.

Key Features of Hydrogen Bonding:

* Stronger than Van der Waals forces but weaker than ionic or covalent bonds.

* Plays a critical role in many biological processes and chemical reactions.

* Responsible for the high boiling point of water and the structure of DNA.

Let me know if you'd like to explore any of these aspects in more detail!