Light Shines Through Atomic Hydrogen Gas That Was Initially in Its

question 97

Multiple Choice

Light shines through atomic hydrogen gas that was initially in its ground state.You observe that after awhile much of the hydrogen gas has been excited to its n = 5 state.What wavelength of light entering the gas caused this excitation? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-19 J)

• A)110 nm
• B)91.4 nm
• C)95.2 nm
• D)2280 nm

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