An electron is accelerated through an electric potential toa kinetic energy of 2.15 x 10-15 J. What is its characteristicwavelength? [Hint: Recall that the kinetic energy of a movingobject is E = 1/2mv2, where m is the mass of the object and n isthe speed of the object.]

Principles of Modern Chemistry
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Chapter5: Quantum Mechanics And Atomic Structure
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Problem 5P: Estimate the probability of finding an electron which is excited into the 2s orbital of the H atom,...
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An electron is accelerated through an electric potential to
a kinetic energy of 2.15 x 10-15 J. What is its characteristic
wavelength? [Hint: Recall that the kinetic energy of a moving
object is E = 1/2mv2, where m is the mass of the object and n is
the speed of the object.]

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