Question

On the basis of bonding, which of the following compounds has the highest boiling point? A. potassium fluoride B. glucose C. water D. methanol

Answer 1

potassium fluoride because potassium is one of the strongest chemicals.

Answer 2

potassium fluoride has highest boiling point

Step-by-step explanation:

• Potassium fluoride consists of
  `K^(+)` and
  `F^(-)` ions. Hence an ionic interaction is present in crystal of potassium fluoride as major intermolecular force.
• Glucose, water and methanol are polar protic covalent molecules. Hence hydrogen bonding force is present as a major force in those molecules.
• Ionic interaction force is much stronger than hydrogen bonding force.
• Therefore more heat energy is required to boil an ionic compound as compared to polar protic covalent molecules.
• Hence potassium fluoride has highest boiling point.