SAT, 01.12.2021 16:30, thedaisylopez3628

The allowed energies of a simple atom are 0. 0 ev, 4. 5 ev and 7. 0 ev. An electron traveling at a speed of 1. 7×106 m/s collisionally excites the atom.

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The allowed energies of a simple atom are 0. 0 ev, 4. 5 ev and 7. 0 ev. An electron traveling at a s...