In which one of the following is the molecular attraction very strong

To determine in which one of the following options the molecular attraction is very strong, we need to consider the factors that contribute to strong molecular attraction.

1. Ionic compounds: In ionic compounds, such as sodium chloride (NaCl), the molecular attraction is very strong. This is because the compound is formed by the transfer of electrons from one atom to another, resulting in the formation of positive and negative ions. The strong electrostatic attraction between these ions leads to a strong molecular attraction.

2. Polar covalent compounds: In polar covalent compounds, such as water (H2O), the molecular attraction is also strong. This is because the compound is formed by the sharing of electrons between atoms, but the electrons are not shared equally. As a result, one end of the molecule becomes slightly positive and the other end becomes slightly negative, creating a dipole. The attraction between these dipoles leads to a strong molecular attraction.

3. Hydrogen bonding: Hydrogen bonding is a special type of molecular attraction that occurs when a hydrogen atom is bonded to a highly electronegative atom, such as oxygen, nitrogen, or fluorine. This creates a strong attraction between the hydrogen atom and the electronegative atom of another molecule. Examples of compounds that exhibit hydrogen bonding include water (H2O) and ammonia (NH3).

Based on these factors, we can conclude that the molecular attraction is very strong in compounds that exhibit ionic bonding, polar covalent bonding, or hydrogen bonding.