Which bond is the strongest?
- Hydrogen bond
- Ionic bond
- Covalent bond
- Van der Waals force
Answer: Covalent bond
Covalent bonds (shared electrons) have bond energies 150-1100 kJ/mol; ionic 400-4000 kJ/mol (but weaker in solution); hydrogen 10-40 kJ/mol; Van der Waals <5 kJ/mol. Context matters, but covalent is generally strongest intramolecularly. [[NCERT Chemistry Class 11]]