Solution: The electron in the n = 5 orbital stays in then n = 5 orbital for 5 * 10 -10 s on average. Estimate the uncertainty of the proton energy from Heisenberg's uncertainty principle.

Problem

The electron in the n = 5 orbital stays in then n = 5 orbital for 5 * 10 ^{-10 }s on average. Estimate the uncertainty of the proton energy from Heisenberg's uncertainty principle.