Question

Minimum de-Broglie wavelength is associated with

• A. Electron
• B. Proton
• C. $CO_{2}$ Molecule
• D. $SO_{2}$ molecule

Answer 1

Answer: (D)

$SO_{2}$ molecule

Answer 2

$\lambda = \frac{h}{mv}.$ For same velocity $\lambda \propto \frac{1}{m}$.

$SO_{2}$ molecule has least wavelength because their molecular mass is high.