A free electron in motion along the x axis has a localized wave function.The uncertainty in its momentum is decreased if:
A)the wave function is made more narrow
B)the wave function is made less narrow
C)the wave function remains the same but the energy of the electron is increased
D)the wave function remains the same but the energy of the electron is decreased
E)none of the above

Question

Quizplus · Accepted Answer

According to the Heisenberg Uncertainty Principle, the uncertainty in position (Δx) and the uncertainty in momentum (Δp) are inversely related. Making the wave function less narrow increases the uncertainty in position, which in turn decreases the uncertainty in momentum.

A Free Electron in Motion Along the X Axis Has