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

question 132

Multiple Choice

The energy of the nth level in a one-electron atom is . 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 × 10^-7 m
• B) 2.03 × 10^-8 m
• C) 6.43 × 10^-9 m
• D) 5.71 × 10^-9 m
• E) 1.03 × 10^-27 m

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