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# Quantum Numbers Practice

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Quantum Numbers Practice
1. Circle the sets of quantum numbers that are not possible. For each one you identify as
wrong, briefly explain why below the set.
n= 2
l= 1
ml= +1
ms= +1/2
n= 3
l= 4
ml= 0
ms= -1/2
n= 5
l= 1
ml= +3
ms= +1/2
n= 3
l= 4
ml= +2
ms= -1/2
n=5
l= 2
ml= 0
ms= -1/2
n= 4
l= 4
ml= -2
ms= +1/2
n= 3
l= 1
ml= -1
ms= +1/2
n= 4
l= 2
ml= +3
ms= +1/2
n= 1
l= 0
ml= 0
ms= +1/2
n= 4
l= 2
ml= 0
ms= -1/2
n=1
l= 0
ml= -1
ms= -1/2
n= 7
l= 3
ml= -2
ms= -1/2
2. For the set of quantum numbers below, answer the following questions.
n=3
l= 2
ml= 0
ms= -1/2
● What energy level is the electron in?
● Draw the general shape of the orbital that it is in.
3. For the set of quantum numbers below, answer the following questions.
n=2
l= 0
ml= 0
ms= -1/2
● What energy level is the electron in?
● Draw the general shape of the orbital that it is in.
4. For the set of quantum numbers below, answer the following questions.
n=4
l= 1
ml= -1
ms= +1/2
● What energy level is the electron in?
● Draw the general shape of the orbital that it is in.
5. What is the max number of electrons an orbital can hold?
6. What does the number of possible ml values tell us?
7. How many orbitals is the s sublevel made out of?
8. How many electrons can the s sublevel hold?
9. How many orbitals is the p sublevel made out of?
10. How many electrons can the p sublevel hold?
11. How many orbitals is the d sublevel made out of?
12. How many electrons can the d sublevel hold?
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