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An electron (mass me=9.109×10−31m_e = 9.109\times10^{-31} kg) faces a potential step of height ΔV=1.0\Delta V = 1.0 eV that exceeds its energy, so its wavefunction decays as e−κxe^{-\kappa x} inside the barrier. The decay constant is κ=2meΔV/ℏ\kappa = \sqrt{2 m_e \Delta V}/\hbar (ℏ=1.0546×10−34\hbar = 1.0546\times10^{-34} J·s, 11 eV =1.602×10−19= 1.602\times10^{-19} J). What is κ\kappa, in m−1^{-1}?