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
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please answer question B

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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