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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- Photon336

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 .

- Photon336

let's take carbon for example

- Photon336

|dw:1443413126471:dw|

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- Photon336

Carbon is in the second period, so it's principle quantum number will be 2

- Photon336

|dw:1443413283780:dw|

- Photon336

carbon will have one s orbital and one p orbital

- Photon336

|dw:1443413387427:dw|

- Photon336

say if we have 6e electrons to fill, we start by putting electrons in the 1s orbital

- Photon336

|dw:1443413462219:dw|

- Photon336

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.
|dw:1443413836055:dw|
we add another electron we get boron, and our final electron we get carbon.
|dw:1443413911384:dw|
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