I need help understanding quantum numbers. The specific question I am working on right now is asking for the set of 4 quantum numbers for the highest energy electron in Te. I have no idea how to even begin the question. Please help!
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Well @Adri17 consider if we have carbon which has 6 electrons.
there are four different quantum numbers:
n = the principle quantum number that's the energy level we're at. like going down a group the energy levels get higher, makes sense because there are more electrons.
l = tells us the shape of our orbitals.
mL = the orientation this can be from -l to 0 to positive l but never greater than l
the fourth quantum number is the spin which is +1/2 or -1/2 corresponds to the spin of the electron whether it's spin up or spin down.
ill show you the quantum numbers for carbon .
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Carbon is in the second period, so it's principle quantum number will be 2
carbon will have one s orbital and one p orbital
say if we have 6e electrons to fill, we start by putting electrons in the 1s orbital
sorry in the figure above it should be 2s before 2 p drawn out, now that we've filled 4 electrons, you can see a pattern here right? s always fills before p, generally because s is a lower energy orbital, we'll in most cases. now that we have filled four electrons we have 2 left but as of now let me show you what element we would have if we were to stop.
we add another electron we get boron, and our final electron we get carbon.
based off of this you can play around with this yourself and figure out what the configuration would be for Te. usually these two concepts are related. @adri17