Light is emitted from a hydrogen lamp when electrons relax from a higher energy state ( ninitial ) to a lower energy state ( nfnal ). For this problem, assume the light emitted from a hydrogen lamp is due to a relaxation from an n = 5 →n = 2 energy state. When photons of this light hit a metal surface, electrons are ejected with a kinetic energy of 17.18 kJ/mol. What is the binding energy of the electrons in units of kJ/mol? Hint: Recall that KE = |Ephoton] – 4 Show your work and write your answer on the WRITTEN TEMPLATE. Include units and report answer with the appropriate number of significant figures. Circle your final answer.

Chemistry
10th Edition
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Light is emitted from a hydrogen lamp when
electrons relax from a higher energy state ( ninitial )
to a lower energy state ( nfinal ).
For this problem, assume the light emitted from a
hydrogen lamp is due to a relaxation from ann = 5
II
→ n =
2 energy state. When photons of this light
hit a metal surface, electrons are ejected with a
kinetic energy of 17.18 kJ/mol. What is the
binding energy of the electrons in units of kJ/mol?
Hint: Recall that KE =
|Ephoton| – 4
Show your work and write your answer on the
WRITTEN TEMPLATE. Include units and report
answer with the appropriate number of significant
figures. Circle your final answer.
Transcribed Image Text:Light is emitted from a hydrogen lamp when electrons relax from a higher energy state ( ninitial ) to a lower energy state ( nfinal ). For this problem, assume the light emitted from a hydrogen lamp is due to a relaxation from ann = 5 II → n = 2 energy state. When photons of this light hit a metal surface, electrons are ejected with a kinetic energy of 17.18 kJ/mol. What is the binding energy of the electrons in units of kJ/mol? Hint: Recall that KE = |Ephoton| – 4 Show your work and write your answer on the WRITTEN TEMPLATE. Include units and report answer with the appropriate number of significant figures. Circle your final answer.
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