# Energy of hydrogen atom - Schrodinger equation [closed]

The wavefunction of the electron in the hydrogen atom is $k* exp(-r/a)$ (k is the normalization constant), but it does not take n into account, whereas the solution of Schrödinger's equation ($H(wavefunction)=E*wavefunction$) says the energy of it is $E=E(0)/n^2$, but the variable in the wavefunction is $r$, and $n$ isn't there. If I apply the Hamiltonian operator on the wavefunction, no $n$ will appear, I don't understand!

• The wavefunction you gave is for the ground state of the hydrogen atom (n=1). Incidentally, "I need an answer as fast as possible" is usually not how you get fast answers around here.... that's just how people who volunteer their expertise work. – Floris Jan 20 '16 at 22:23
• here is a list of other sites that might answer a student question meta.physics.stackexchange.com/questions/391/… – anna v Jan 21 '16 at 4:48
• I was simply very anxious when when I wrote the post, and worried about this point of the course I hadn't understood. Everyone is not a machine who writes perfect posts that could be published in scientifical reviews, Thank you for your answer, although it is shorter than your blame. – Chewie Jan 21 '16 at 5:06