### Longest and Highest Wavelength of Radiation that is able to eject an electron

Posted:

**Fri Apr 27, 2018 11:38 pm**How do you calculate the longest and shortest wavelengths that are able to eject an electron?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=16&t=31151

Page **1** of **1**

Posted: **Fri Apr 27, 2018 11:38 pm**

How do you calculate the longest and shortest wavelengths that are able to eject an electron?

Posted: **Sat Apr 28, 2018 9:13 am**

To calculate the longest wavelength, which means the minimum energy required to eject an electron, set the work equation to E=hv. I’m not sure if you can actually solve for the shortest wavelength since you just need to get past the longest wavelength, but if anyone could clarify, that’d be great!

Posted: **Sun Apr 29, 2018 3:45 pm**

Since the maximum wavelength is the minimum energy required to eject an electron, I am pretty sure you cannot solve for shortest wavelength.