## Textbook question 1.17

H-Atom ($E_{n}=-\frac{hR}{n^{2}}$)

Ziana Bhanji 1E
Posts: 30
Joined: Fri Apr 06, 2018 11:01 am

### Textbook question 1.17

Could someone please explain why Z=2 and why the solution manual directly calculates the frequency and not the energy.

Alexander Hari 1L
Posts: 30
Joined: Wed Feb 14, 2018 3:02 am

### Re: Textbook question 1.17

The atomic number of Helium is 2 so Z should be 2 as well, my textbook gives an answer for 1.17 as 30.4nm which is the wavelength and the question asks for wavelength not energy. Maybe your solution manual is for a different edition or simply converted it to Joules instead of wavelength?