20. One-dimensional infinite potential wells: Here are the widths (lengths) L of three wells, each containing an electron. Rank them according to the de Broglie wavelength of the electron in the third excited state, greatest first. () indicates a tie.
L₁ = 100 pm, L₂ = 200 pm, L₃ = 300 pm (A) 3, 2, 1 (B) 1, 2, 3 (C) 3, (1,2) (D) 2, (1,3) (E) (1,2,3)