Optical Spectroscopy and Atomic Structure

[sheri1987]

Homework Statement

Calculate the energy and radius for each of the five lowest (n = 1,2,3,4,5) electron orbits in a Helium atom with only one electron. Enter the energy as a positive value in units of "eV" and the radius in units of "nm". Hint: The Helium nucleus has 2 protons so Z = 2 and the ground state energy of Helium will be E0 = k(Ze)2/2r.

If n=2, find E and r1

Homework Equations

The Attempt at a Solution

I know how to answer the question, but I need help with finding the ground Energy E0 of Helium. I keep ending up with incorrect answers using that equation given in the problem, can anyone help me solve for the ground energy of Helium?

 

[G01]

Your using the correct formula.

In order to find your mistake, I'll have to see your calculations.