## Question 1.13 (Sixth Edition)

$E=hv$

Steve Magana 2I
Posts: 61
Joined: Fri Sep 28, 2018 12:24 am

### Question 1.13 (Sixth Edition)

Question: Use the Rydberg formula for atomic hydrogen to calculate the wavelength of radiation generated by the transition from n = 4 to n = 2.

Can someone help me understand how to do this problem please? Thank you!

Andrea Zheng 1H
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

### Re: Question 1.13 (Sixth Edition)

a) use the Rydberg equation found on page 7 of 6th edition textbook. You already know Rydberg's constant, and you are given n2=4 and n1=2. You just plug these values in and you can get the wavelength. This should be 486 nm.
b) The Balmer series consists of lines with n1 = 2 and the Lyman series consists of lines with n1=1. Because this problem has n1=2, it would be part of the Balmer series.
c) Based on the 486 nm wavelength, this transition would take place in the visible region, as the visible region is between ~400nm-700nm. Looking at the table, 486 nm corresponds with blue.