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What is de-Broglie wavelength of a He-atom in a container at 300K. (Use Uavg)


 


Ans. 0.79 angstrom


8 years ago

Answers : (1)

vikas askiitian expert
509 Points
							

average speed of molecule (vavg)= (8RT/piM)1/2

M is molar mass = 4

T = temperature = 300k , R  = 0.08321)

 

now use , lamda = h/mvavg , this will give u the ans 0.79 angstroms

8 years ago
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