- #1
mr_coffee
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What is the ground state energy of the following.
(a) an electron
Well the formula is:
E_n = (h^2/(8*m*L^2))*n^2;
The ground state means, n = 1, its the lowest enegery level possible.
So i plugged in n = 1,
mass of e = 9.11E-31;
h = 4.136E-15 eVs;
L = 100 pm, because the book says that's tabout the size of a typical atom.
I ended up getting:
E_1 = 2.347E20 eV which was wrong, any ideas why? They really don't tell me what value i should give L, so I'm guessing that's where i screwed up maybe? In the book it says the electron is in an infintie well. thanks!
(a) an electron
Well the formula is:
E_n = (h^2/(8*m*L^2))*n^2;
The ground state means, n = 1, its the lowest enegery level possible.
So i plugged in n = 1,
mass of e = 9.11E-31;
h = 4.136E-15 eVs;
L = 100 pm, because the book says that's tabout the size of a typical atom.
I ended up getting:
E_1 = 2.347E20 eV which was wrong, any ideas why? They really don't tell me what value i should give L, so I'm guessing that's where i screwed up maybe? In the book it says the electron is in an infintie well. thanks!
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