The Energy of the Nth Level in a One-Electron Atom $\times$

question 38

Multiple Choice

The energy of the nth level in a one-electron atom is E_n = -13.6(Z²/n²) eV.Consider a beryllium ion with all but one of its electrons removed (a beryllium atom normally has four electrons) .What is the wavelength of a photon emitted when the electron makes the transition from the third-lowest to the lowest energy state?

• A)1.03 \(\times\) 10^-7 m
• B)2.03 \(\times\) 10^-8 m
• C)6.43 \(\times\) 10^-9 m
• D)5.71 \(\times\) 10^-9 m
• E)1.03 \(\times\) 10^-27 m

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