The de-Broglie wavelength of an oxygen molecule at \( 27^\circ \text{C} \) is \( x \times 10^{-12} \, \text{m} \). The value of \( x \) is: [Take Planck’s constant \( = 6.63 \times 10^{-34} \, \text{J}\cdot\text{s} \), Boltzmann constant \( = 1.38 \times 10^{-23} \, \text{J K}^{-1} \), mass of oxygen molecule \( = 5.31 \times 10^{-26} \, \text{kg} \)]
