Ch.7 - Quantum MechanicsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: What is the threshold frequency ν0 of cesium? Note that 1 eV (electron volt) = 1.60 × 10−19 J. Express your answer numerically in hertz.

Solution: What is the threshold frequency ν0 of cesium? Note that 1 eV (electron volt) = 1.60 × 10−19 J. Express your answer numerically in hertz.

Problem

What is the threshold frequency ν0 of cesium? Note that 1 eV (electron volt) = 1.60 × 10−19 J. Express your answer numerically in hertz.

Solution

We´re asked to determine the threshold frequency νo of Cesium (Cs) in Hertz (Hz), given that 1 eV = 1.60x10-19 J.


Remember that the threshold frequency is related to the Photoelectric effect, and is the minimum frequency of a photon that is needed to hit the surface of a metal or atom to release an electron.

In other words, a photon hits the Cs atom and it transfers its energy to an electron, which in turn is released.

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