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Practice Questions Using Quantum Number Theory 1. How many electrons are mathematically possible if n=3_______, if n=1______ 2. How many suborbitals are mathematically possible if n=2______, if n=3 _______ 3. How many types of suborbitals are possible if n=2_________, if n=4 ________ 4. What is the maximum number of electrons mathematically possible, given the following principle and secondary quantum combinations? 2p______, 5p______, 7s______, 6f________ 5. Circle the suborbitals which do not theoretically exist: 3f, 2p, 5s, 2d, 5p, 3d, 1p, 3d, 6f 6. Write all possible sets of quantum values (n, l, ml, ms), that mathematically could represent an electron found in each of the following suborbitals: a) For a 5p electron b) For a 3s electron 7. 8. a) 9. a) 10. What are the possible values for l, when: a) n=4 _____________ b) n=1 _________ c) n=3___________ What are the possible values for ml, when: n=4, l=3 ______________ b) n=3, l=1 ___________ c) n=2, l=0 ______ d) n=5, l=4 _______________________ Write the principle quantum number and the letter designating the secondary quantum number (ie. the shape of the suborbital), for each of the following: n=2, l=1 _____ b) n=3, l=2 _______c) n=4, l=3 ______d) n=1, l=0 ______ e) n=4, l=1______ State whether each of the following sets of quantum numbers are possible or impossible. For any values that are incorrect, state the correction necessary to make it theoretically possible: a) n=3, l=3, ml= -1, ms = +1/2 b) n=3, l=1, ml =0, ms=0 c) n=1, l=0, ml=+1, ms= -1 d) n=2, l=1, ml= -2, ms= -1/2 e) n=5, l=2, ml = -1, ms = -1/2