University:
Eastern Kentucky University
Course:
PHY 202 | University Physics II
Academic year:

2022
Views:

228

Pages:

2
Author:

folclord7m

l n ml ms 1. State the four quantum numbers and the possible values they may have. First - Primary Quantum number (n) = size of electron cloud n = 1 up to ∞….in reality n = 1 -7 Second – Azimuthal or Angular Momentum Quantum number ( l) = shape of electron cloud; ( l = 0 up to (n-1)…. When l = 0 (s cloud), 1 (p cloud), 2 (d cloud), 3 (f cloud) Third – Magnetic Quantum number (m l) = location or spatial orientation ml = Fourth – Spin Quantum number (m s) = electron spin ms = +1/2 or -1/2 l to l 2. Name the orbitals described by the following quantum numbers a.n=3,l=0 b.n=3,l=1 c.n=3,l=23d d.n=5,l=05s 3s 3p 3. Give the n andlvalues for the following orbitals a. 1s b. 3s c. 2p (1,0) (3,0) (2,1) d. 4d (4,2) e. 5f (5,3) 4. Place the following orbitals in order of increasing energy: 1s, 3s, 4s, 6s, 3d, 4f, 3p, 7s, 5d, 5p 1s 3s 3p 4s 3d 5p 6s 4f 5d 7s 5. What are the possible mlvalues for the following types of orbitals? a. s b. p 0 -1, 0, +1 c. d -2, -1, 0, +1, +2 d. f -3, -2, -1, 0, +1, +2, +3 6. How many possible orbitals are there for n = a. 4 b. 10 16 = n2 4s 100 4px, 4py, 4pz 4d, 4d, 4d, 4d, 4d 4f, 4f, 4f, 4f, 4f, 4f, 4f 7. How many electrons can inhabit all of the n=4 orbitals? 32 = 2n2 4s2 4px2, 4py2, 4pz2 4d2, 4d2, 4d2, 4d2, 4d2 4f2, 4f2, 4f2, 4f2, 4f2, 4f2, 4f2 Identify the element whose last electron would have the following four quantum numbers: 8. 3, 1, -1, +1/2____Al_______ 11. 4, 3, +3, -1/2___ Lu________ 9. 4, 2, +1, +1/2___ Mo _____ 10. 6, 1, 0, -1/2____ At ______ 12. 2, 1, +1, -1/2____ Ne _______ 13. VALID INVALID VALID INVALID VALID VALID INVALID INVALID VALID INVALID Which of the following represents a permissible set of quantum numbers? (answer “yes” if permissible and “no” if no permissible) 14. 2, 2, +1, -1/2____ NO_______ 15. 5, 1, 0, +1/2_____ YES ______ 16. 6, 3,-2, +1/2_____ YES ______ 17. 7, 0, 0, -1/2_____ YES _______ 18. 4, 1, 8, +1/2______ NO_______ Write the four quantum numbers which describe the location of the highest energy electron of the following: 19. N #7_____ (2, 1, 1, +1/2)_____ 20. Ni #28____(3, 2, 0, -1/2)_____ 21. Xe #54____(5, 1, 1, -1/2)____ 22. Re #75____(5, 2, 2, +1/2)_____ 23. Pu #94____(5, 3, 1, +1/2)_____ 24. Br #35____(4, 1, 0, -1/2)______ Give the four quantum numbers which describe the location of each of the following: 25. 26. 27. 28. The 4th electron in carbon_____(2, 0, 0, -1/2)____________________________ The 25th electron in Hf________(3, 2, 2, +1/2)___________________________ The 57th electron in Ho_______(5, 2, -2, +1/2)___________________________ The 49th electron in Xe_______(5, 1, -1, +1/2)___________________________