An Energy of 13

question 23

Multiple Choice

An energy of 13.6 eV is needed to remove an electron from the n = 3 state of a lithium atom.If a single photon accomplishes this task,what wavelength is needed? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.6 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

• A)146.3 nm
• B)30.5 nm
• C)13.8 nm
• D)91.4 nm
• E)​234 nm

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