# (a) Interpretation: Line width of lithium line at 6707.76 A ∘ is to be determined when the temperature of absorbing atom is 2000 K. Concept introduction: Doppler Effect concept will be used to calculate the width of lithium line. For this following formula will be used: Δ λ λ = v c Here, Δλ = wavelength difference λ= wavelength v = speed of absorbing atom c = speed of light And average speed of atom- v = 8 k T / π m Here, T = temperature of absorbing atom k = Boltzmann constant, 1.38 × 10 − 23 kg .m 2 .s -2 .K -1 m = mass of atom

### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

#### Solutions

Chapter 8, Problem 8.8QAP
Interpretation Introduction

## (a)Interpretation:Line width of lithium line at 6707.76A∘ is to be determined when the temperature of absorbing atom is 2000 K.Concept introduction:Doppler Effect concept will be used to calculate the width of lithium line. For this following formula will be used:Δλλ=vcHere,Δλ = wavelength differenceλ= wavelengthv = speed of absorbing atomc = speed of lightAnd average speed of atom-v=8kT/πmHere,T = temperature of absorbing atomk = Boltzmann constant, 1.38×10−23kg.m2.s-2.K-1 m = mass of atom

Interpretation Introduction

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