An energy of 122.4 eV is needed to remove an electron from the n = 1 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 × 10 8 m/s, 1 eV = 1.6 × 10 −19 J, and 1 nm = 10 −9 m)   a. 10 nm   b. 16 nm   c. 1.5 nm   d. 26 nm   e. 3.4 nm

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Q: 1. The energy levels for a Bohr atom are shown below. -4.90 ev -7.65 eV n = 5 n = 4 -13.6 ev n = 3…

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A: Bohr model of Hydrogen atom

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The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: