# Thread: quantum numbers in three dimensions

1. Hey guys,

So we're learning about Schrodinger's equations and learning how to calculate the energy in a cubic "particle in a box model". Apparently, the quantum numbers in the x, y, and z dimensions do not have to be the same. Could anyone please tell me what exactly that means and how we're supposed to know when the quantum numbers change?

Curiousman

2.

3. quantum numbers describe electrons in an atom,

there is a possible of 6 electrons in a p orbital, in each dimension/subshell x, y and z there can be 2 electrons.

and each of the six electrons (if there are 6) has a specific set of quantum numbers. i guess thats why they dont have to be the same, perhaps that's what's meant.

correct me (anyone) if im wrong.

i suppose its not so much that the numbers change, but that in a single atom there can be no two quantum numbers the same.

and the set of quantum numbers depends on the electron.

Example: The quantum numbers used to refer to the outermost valence electron of the Fluorine (F) atom, which is located in the 2p atomic orbital, are; n = 2, l = 1, ml = 1, or 0, or −1, ms = −1/2 or 1/2.
found that on wikipedia http://en.wikipedia.org/wiki/Quantum_number

could someone else check to see if i answered it right :P

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