Aits covalent nature
Bits polar nature
Cthe presence of very strong Vander Waals' forces
Dits electronegative nature
Answer:
B. its polar nature
Read Explanation:
Water (H2O) is a molecule composed of one oxygen atom covalently bonded to two hydrogen atoms.
Oxygen is highly electronegative, meaning it attracts electrons more strongly than hydrogen.
This uneven sharing of electrons creates a polar molecule, where the oxygen end has a partial negative charge (δ-) and the hydrogen ends have partial positive charges (δ+).
Hydrogen Bonding
The positive end of one water molecule is attracted to the negative end of another water molecule.
This attraction is known as a hydrogen bond.
Hydrogen bonds are relatively weak individually but are numerous and collectively strong in liquid water.
Impact on Physical State
The presence of hydrogen bonds is the primary reason why water exists as a liquid at room temperature and atmospheric pressure.
These bonds hold the water molecules together, giving liquid water its cohesive properties and a definite volume.
Without hydrogen bonding, water would likely be a gas at much lower temperatures, similar to other hydrides like H2S.