Question

Debye is the unit of _______?
1. Lattice enthalpy
2. Bond enthalpy
3. Dipole moment
4. Bond length

Answer 1

Correct Answer - Option 3 : Dipole moment

The correct answer is Dipole moment.

• Debye is the CGS unit of the electric dipole moment.
• The SI unit of the electric dipole moment is coulomb - meter (C-m).
• The dimensions of the electric dipole moment are [M⁰ L¹ T¹ I¹]

• Peter Debye was the Dutch chemist best knows for his work on X-ray diffraction and dipole moments.
  • Some of his notable works are the Debye model, Debye relaxation, Debye frequency, Debye–Huckel equation, Debye-Waller factor​, etc.
  • He was the recipient of the Nobel prize in the year 1936 for his work on X-ray diffraction and dipole moments.
  • The magnitude of the dipole moment is given in Debye units to honor him.

• Lattice enthalpy is defined as the energy required to completely separate one mole of a solid ionic compound into gaseous constituent ions. The unit of bond enthalpy is kJ mol^–1.
• Bond length is defined as the equilibrium distance between the nuclei of two bonded atoms in a molecule.
• Bond enthalpy is defined as the amount of energy required to break one mole of bonds of a particular type between two atoms in a gaseous state. The unit of bond enthalpy is kJ mol^–1.