Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 7 - Problems: 7.26

Answer

656.5 nm

Work Step by Step

1 The least energetic spectral Line for Hydrogen in the VISIBLE range can be obtained when an Electron in H atom jumps from Level 2 to Level 3. Now, Rydberg's Equation is given as : 1/ λ = R [1/(n1)² - 1/(n2)²] Where, λ : Wavelength R : Rydberg's Constant = 1.0967 x 10^7 / m 2 Solution : Here, n1 = 2 n2 = 3 Substituting the values in the Rydberg's formula, 1/ λ = R [1/(2)² - 1/(3)²] 1/ λ = 1.0967 x 10^7 x [1/4 - 1/9] 1/ λ = 1.0967 x 10^7 x (5/36) 1/ λ = 1.52 X 10^6 / m λ = 6.565 x 10^-7 m λ = 656.5 nm
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.