C Search Cutnell, Physics, 10e General Physics (General Physi Assignment Gradebo

Question

C Search Cutnell, Physics, 10e General Physics (General Physi Assignment Gradebook gnment PRINTER VERSDON Chapter 30, Problem 18 because the electron in play roles in this problem. A hydrogen atom emits has momentum x z7 This photon is emitted the atom falls from a higher e n 1 level. What is the quantum number of the level which the electron falls? use values 6.626 x 10 s, c 2.998 x 10 m/s, and e 1.602 x 1019 c. Bohr model picture of toaccesecr I uobn.wyxs sons, une All Rights Reserved A Division of lohn WisLA Send g2000-201zuohn

Explanation / Answer

Energy of photon,

E = p*c

E = 6.813*10^(-27)*3*10^8 = 20.42*10^(-19) J

E = 12.76 eV

energy of emitted photon is,

E = En - E1

12.76 = En - (-13.6) / 1

En = -0.8343 = -13.6 / n^2

n^2 = 16.29

n = 4

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