Consider the electron of a Li2+ ion that undergoes a transition from a higher energy state n to its adjacent lower energy state n – 1 (e.g. n = 2→1, 3→2, 4→3, etc) and emits a photon. Suppose the emitted photon is used to strike the surface of potassium, which has a threshold frequency of 5.464 × 10^14 s^–1.a) What is the maximum initial quantum number, n, that is required inorder to emit a photon with high enough energy to generate a photocurrent from the metal surface?b) Using the n value solved in part(a), calculate the maximum speed of the photoelectron from potassium. If you couldn’t solve for n in part (a), use n = 3.

Answered: Using the n value solved in part(a),…

Using the n value solved in part(a), calculate the maximum speed of the photoelectron from potassium. If you couldn’t solve for n in part (a), use n = 3.

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Question

Consider the electron of a Li2+ ion that undergoes a transition from a higher energy state n to its adjacent lower energy state n – 1 (e.g. n = 2→1, 3→2, 4→3, etc) and emits a photon. Suppose the emitted photon is used to strike the surface of potassium, which has a threshold frequency of 5.464 × 10^14 s^–1.

a) What is the maximum initial quantum number, n, that is required inorder to emit a photon with high enough energy to generate a photocurrent from the metal surface?
b) Using the n value solved in part(a), calculate the maximum speed of the photoelectron from potassium. If you couldn’t solve for n in part (a), use n = 3.

Expert Solution