The allowed energies of a simple atom are 00ev 35ev and, Ask an Expert

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The allowed energies of a simple atom are 0.0eV , 3.5eV and 5.0eV . An electron traveling at a speed of 1.6×10^6m/s collisionally excites the atom.

A)- What is the minimum speed the electron could have after the collision?

B)- What is the maximum speed the electron could have after the collision?

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