### Calculating quantum numbers

Posted:

**Sun Nov 24, 2019 6:51 pm**What is the best way to calculate quantum numbers?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=21&t=52902

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Posted: **Sun Nov 24, 2019 6:51 pm**

What is the best way to calculate quantum numbers?

Posted: **Sun Nov 24, 2019 8:39 pm**

If you're asked to give the quantum numbers for an atom or an ion you can write out the electron configuration of it and from there you can easily find out the quantum numbers.

Posted: **Sat Dec 07, 2019 9:24 pm**

Writing out the electron configuration will give all 4 quantum numbers in some respect

Posted: **Sat Dec 07, 2019 9:36 pm**

Identifying the subshell in which the electron exists in will give you the first two quantum numbers, and the orbital will give m_{l} and the spin of the electron will tell you if it is +1/2 or -1/2.

Posted: **Sat Dec 07, 2019 11:17 pm**

Focus on the last electron when calculating quantum numbers. N and L can be calculated by simply looking at the primary quantum number and the angular orbital number. Ml and Ms will tell you the spin and specific orbital of that electron.