Posted by **Sandhya** on Sunday, April 13, 2008 at 3:43pm.

1)What is the longest wavelength light capable of ionizing a hydrogen atom in the n = 6 state

2)a. Calculate the energy of the electron in the ground state of single ionized helium, which has an atomic number Z = 2.

b. Calculate the radius of its ground-state orbit

- Atomic physics -
**drwls**, Sunday, April 13, 2008 at 4:04pm
1) Solve h c/L = (Rydberg)/6^2 for L

The Rydberg energy is equivalent to 13.6 eV, but you will have to convert it to Joules

2) a) The ground state energy of He+ is 2^2 = 4 times below that of hydrogen in the n=1 quantum level.

b) half the radius of the n=1 Bohr orbit of hydrogen

- Atomic physics -
**Sandhya**, Sunday, April 13, 2008 at 9:58pm
I thank you immensely for your help.

- Atomic physics -
**VJC**, Wednesday, December 8, 2010 at 2:54pm
what is h and c?

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