J. Upon An unknown elemental metal has work function of ¤=8.01×10¬ illumination with UV light of wavelength 162 nm, electrons are ejected with velocity of at 2.95×10³m/s. What is the threshold wavelength? What is the work function in units of eV?

J. Upon An unknown elemental metal has work function of ¤=8.01×10¬ illumination with UV light of wavelength 162 nm, electrons are ejected with velocity of at 2.95×10³m/s. What is the threshold wavelength? What is the work function in units of eV?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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**Problem Statement:**

An unknown elemental metal has a work function of $ \Phi = 8.01 \times 10^{-19} \, \text{J} $. Upon illumination with UV light of wavelength 162 nm, electrons are ejected with a velocity of $ 2.95 \times 10^3 \, \text{m/s} $.

**Questions:**

1. What is the threshold wavelength?
2. What is the work function in units of eV?

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