WS Quantum Numbers

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					WS Quantum Numbers                                                                                                Name ___________________
Part I: Determine the element whose outermost electron is being defined by the following quantum numbers.
     Element                             Quantum Number Code
1. _____________                         n = 1, l = 0, ms = - ½
2. _____________                         n = 2, l = 1, ml = -1, ms = + ½
3. _____________                         n = 2, l = 1, ml = 0, ms = - ½
4. _____________                         n = 2, l = 1, ml = 1, ms = + ½
5. _____________                         n = 3, l = 1, ml = -1, ms = - ½
6. _____________                         n = 3, l = 1, ml = 0, ms = + ½
7. _____________                         n = 3, l = 1, ml = 1, ms = - ½
8. _____________                         n = 4, l = 0, ms = + ½
9. _____________                         n = 3, l = 2, ml = -2, ms = + ½
10. _____________                        n = 3, l = 2, ml = -2, ms = - ½
11. _____________                        n = 3, l = 2, ml = 0, ms = + ½
12. _____________                        n = 3, l = 2, ml = 1, ms = - ½
13. _____________                        n = 3, l = 2, ml = 2, ms = + ½
14. _____________                        n = 4, l = 1, ml = -1, ms = + ½
15. _____________                        n = 4, l = 1, ml = 1, ms = - ½
16. _____________                        n = 4, l = 1, ml = 0, ms = + ½
Part II:
Which of the following sets of quantum numbers are not allowed in an atom? For the sets of quantum numbers
that are incorrect, state what is wrong.
                              √ if not allowed       Explanation of error if applicable
      1. n = 2, l = 1, ml = -1 _____        ________________________________________________________
      2. n = 1, l = 1, ml = 0 _____         ________________________________________________________
      3. n = 8, l = 7, ml = 6 _____         ________________________________________________________
      4. n = 1, l = 0, ml = 2 _____         ________________________________________________________
      5. n = 3, l = 2, ml = 2 _____         ________________________________________________________
      6. n = 4, l = 3, ml = 4 _____         ________________________________________________________
      7. n = 0, l = 0, ml = 0 _____         ________________________________________________________
      8. n = 2, l = -1, ml = 1 _____        ________________________________________________________
Part III:
What is the maximum number of electrons in an atom that can have these quantum numbers?
    1. n = 4                             ______
    2. n = 5, l = 3, ml = +1             ______         Extreme Brain Challenge Questions
    3. n = 5, l = 3, ml = +1, ms = + ½   ______         11. n = 4, ml = +1   _______
    4. n = 3, l = 2                      ______         12. n = 5, ms = + ½ _______
    5. n = 2, l = 1                      ______
    6. n = 0, l = 0, ml = 0              ______
    7. n = 2, l = 1, ml = -1, ms = - ½   ______
    8. n = 3                             ______
    9. n = 2, l = 2                      ______
    10. n = 1, l = 0, ml = 0             ______
Answers:
Part I 1) He, 2) B, 3) F, 4) N, 5) S, 6) Si, 7) Ar, 8) K, 9) Sc, 10) Fe, 11) V, 12) Cu, 13) Mn, 14) Ga, 15) Kr, 16) Ge
Part II #2 (no p orbitals in n=1), #4 (when l = 0, then only one s orbital per energy level so m l = 0), #6 (if l = 3 then ml can only = -3 to 3),
#7 n must = a number of 1 or greater), #8 (l cannot equal a negative number). #’s 1, 3 and 5 are ok and can exist.              Part III 1) 32, 2) 2, 3) 1,
4) 10, 5) 6, 6) 0, 7) 1, 8) 18, 9) NONE, there are no d orbital (l=2) in the second energy level, 10) 2 11) = 6 b/c 4p, 4d & 4f have a +1 orbital.
12) = 25 b/c the 5s, 5px, 5py, 5pz, all 5 of the 5d orbitals, all 7 of the 5f orbitals and all 9 of the 5g orbitals have a +½ electron totaling 25