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An electron is trapped in a two-dimensional region of ?? =??= 1.00x10-10 m (a typical atomic...

An electron is trapped in a two-dimensional region of ?? =??= 1.00x10-10 m (a typical atomic diameter). a. Find the energies of the ground state and first two excited states. b. How much energy must be supplied to excite the electron from the ground state to the second excited state? c. From the second excited state, the electron drops down to the first excited state. How much energy is released in this process?

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