1.0 * 106 sodium atoms are excited to the 3p state at t =
Chapter 41, Problem 41.51(choose chapter or problem)
1.0 * 106 sodium atoms are excited to the 3p state at t = 0 s. How many of these atoms remain in the 3p state at (a) t = 10 ns, (b) t = 30 ns, and (c) t = 100 ns?
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