question_answer 35)

Find the typical de Broglie wavelength associated with a He atom in helium gas at room temperature (27°C) and 1 atm pressure ; and compare it with the mean separation between two atoms under these conditions. 

Answer:

Here T = 27°C =27 + 273 = 300 K P = 1 atm = 1.01 x 105 Nm-2 Also, mass of helium atom, or Clearly