The correct SI unit of molar conductivity is

The correct answer is Option (3) → $S\, m^{2}\, mol^{-1}$

• Molar conductivity (Λₘ) is given by:
  Λₘ = κ × (1000 / C)

• Where:

  • κ (conductivity) → S m⁻¹

  • C (concentration) → mol m⁻³

So,

• Λₘ = S m⁻¹ × m³ mol⁻¹

• = S m² mol⁻¹