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Quantum Numbers Quantum Numbers Grade: Subject: Date: «grade» AP «date» 1 Which of the following statements are false regarding the principal quantum number (n) ? A n = 1, 2, 3... B as n increases the energy of the electrons in it that level decreases C as you go down a group on the periodic table n increases D as you go across a period on the periodic table n is constant 2 The angular momentum (azimuthal) quantum number (l) (2 correct) A describes the orbital of an electron B has integral values of 0 to n+1 C is called an s orbital if it equals 0 D is called a d orbital if it equals 1 E is called an f orbital if it equals 2 3 The magnetic quantum number A has integral values from l to +l including 0 B has integral values from l to +l excluding 0 C indicates the position of an orbital in three dimensional space D indicates the spin on an electron 4 How many orbitals in an atom can have the designation 4d? A 1 B 3 C 5 D 7 1 5 How many d orbitals have the value n=2? A 0 B 1 C 3 D 5 E 7 6 A possible set of quantum numbers for the highest energy electron of nickel is A n = 3, l = 3, ml = 0, ms = +1/2 B n = 3, l = 2, ml = 0, ms = +1/2 C n = 4, l = -2, ml = 0, ms = +1/2 D n = 4, l = 0, ml = 0, ms = +1/2 E n = 4, l = 1, ml = 0, ms = +1/2 7 Which of the following sets of four quantum numbers may correctly describe a 4p electron? A n = 4, l = 3, ml = 0, ms = +½ B n = 4, l = 2, ml = 2, ms = +½ C n = 4, l = 2, ml = 1, ms = +½ D n = 4, l = 2, ml = 1, ms = ½ E n = 4, l = 1, ml = 1, ms = +½ 8 Which of the following sets of four quantum numbers may correctly describe a 3d electron? A n = 3, l = 2, ml = 2, ms = +½ B n = 3, l = 2, ml = 3, ms = +½ C n = 3, l = 2, ml = 0, ms = ½ D n = 3, l = 3, ml = 0, ms = +½ E n = 3, l = 3, ml = 2, ms = +½ 9 Which of the following sets of quantum numbers is incorrect? A n = 1, l = 1, ml = 0 B n = 2, l = 1, ml = 1 C n = 3, l = 2, ml = 2 D n = 4, l = 2, ml = 0 2 10 How many electrons can have the values n=1, l=0, ml=0? A 0 B 1 C 2 D 6 E 10 11 How many electrons can have quantum numbers n=2, l=1? A 0 B 2 C 4 D 6 E 10 12 How many orbitals can have quantum numbers of n=5 and l=4? A 0 B 3 C 5 D 7 E 9 13How many electrons can have the quantum numbers n = 4, l = 3, ml = 3, ms = +1/2? A B C D E 0 1 2 4 6 3