Ch.7 - Quantum MechanicsWorksheetSee all chapters
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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: Calculate the energy (J) change associated with an electron transition from n = 2 ton = 5 in a Bohr hydrogen atom.A) 6.5 x 10-19B) 5.5 x 10-19C) 8.7 x 10-20D) 4.6 x 10-19E) 5.8 x 10-53

Problem

Calculate the energy (J) change associated with an electron transition from n = 2 to

n = 5 in a Bohr hydrogen atom.

A) 6.5 x 10-19

B) 5.5 x 10-19

C) 8.7 x 10-20

D) 4.6 x 10-19

E) 5.8 x 10-53

Solution

We are asked to calculate the energy (J) change associated with an electron transition from n = 2 to n = 5 in a Bohr hydrogen atom.

To calculate the energy required for the electronic transition, we will use the Bohr Equation shown below which relates electronic transition to the energy:

ΔE= -RH1nf2 -1ni2  

ΔE = energy related to the transition
RH = Rydberg constant

ni = initial principal energy level
nf = final principal energy level


Given values:


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