homework problem

Question

What is the velocity of an electron having a de Broglie wavelength that is approximately the length of a chemical bond? Assume this length to be 1.2*10–10m.

Answer 1

λ = h/(mv) ⇒

 

v = h/(λm)

 

λ = 1.2 x 10^-10 meters (given)

m = electron mass (look it up in your physics or chemistry textbook)

h = Planck's constant (look it up in your physics or chemistry textbook)

 

Plug in the numbers in appropriate units and get v.