MR. SURRETTE
VAN NUYS HIGH SCHOOL
CHAPTER 13: MODERN ELECTRON ORBITALS
WORKSHEET SOLUTIONS
1. Regions of space that surround the nucleus are called:
1A. orbitals
2. Subshells are represented by the symbol:
2A. l
3. Energy levels are also called:
(A) n levels
(B) shells
(C) principal quantum numbers
(D) whole numbers starting with the number 1
(E) all are correct
4. If an electron moves from n = 7 to n = 3, it:
4A. loses energy
5. The first energy level contains _____ subshell(s):
5A. 1
6. The s subshell can hold _____ electrons:
6A. 2
7. The _____ subshell looks like dumb bells:
7A. p
8. An element’s atomic number is determined by its number of:
8A. protons
9. An atom contains seven protons. This means it has _____ electrons.
9A. 7
10. An atom contains four orbitals. This means it can hold up to _____ electrons.
10A. 8
11. The 2p subshell holds _____ electrons.
11A. 6
12. The 7d subshell hold _____ electrons.
12A. 10
13. This shell contains the least amount of energy:
13A. 1
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CHEMISTRY
MR. SURRETTE
VAN NUYS HIGH SCHOOL
14. Out of the following choices, this subshell contains the most energy:
(A) 6f (B) 6d (C) 7p (D) 7s (E) 3s
15. Out of the following choices, this subshell contains the least amount of energy:
(A) 2s (B) 1s (C) 2p (D) 3s (E) 7p
16. The first energy level holds _____ electron(s).
16A. 2
17. The fourth energy level holds _____ electrons.
17A. 18
18. Calcium contains _____ energy level(s).
18A. 4
19. The element symbolized as Rf contains _____ energy level(s).
19A. 7
20. Neon contains ______ subshell(s).
20A. 5
21. Helium contains _____ orbital(s).
21A. 1
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CHEMISTRY
MR. SURRETTE
VAN NUYS HIGH SCHOOL
CHAPTER 13: ELECTRONS AND THE MODERN ATOM
QUIZ SOLUTIONS
1. The principal quantum number is represented by the symbol:
1A. n
2. As an electron moves from n = 1 to n = 4, it:
2A. gains energy
3. The fourth energy level contains _____ subshell(s).
3A. 4
4. The p subshell can hold _____ electrons.
4A. 6
5. The _____ orbital looks like a sphere.
5A. s
6. An atom contains two electrons, so it has _____ protons.
6A. 2
7. An atom contains nine orbitals. This means it can hold up to _____ electrons.
7A. 18
8. The 2s subshell holds _____ electrons.
8A. 2
9. The 6f subshell holds _____ electrons.
9A. 14
10. The _____ subshell contains the least amount of energy.
10A. 1s
11. The n = _____ shell contains the most energy.
11A. 7
12. Out of the following choices, the _____ subshell contains the most energy.
12A. 3s
13. Out of the following choices, the _____ subshell contains the least energy.
13A. 2s
14. The third energy level holds up to _____ electrons.
14A. 8
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CHEMISTRY
MR. SURRETTE
VAN NUYS HIGH SCHOOL
15. The seventh energy level holds up to _____ electrons.
15A. 32
16. Silicon contains _____ energy level(s).
16A. 3
17. The element Pb contains _____ energy levels.
17A. 6
18. Hydrogen contains _____ subshell(s).
18A. 1
19. Argon contains _____ orbitals.
19A. 9
20. Subshells are represented by the symbol:
20A. l
21. As an electron moves from n = 7 to n = 3, it:
21A. loses energy
22. The s subshell can hold _____ electrons:
22A. 2
23. An element’s atomic number is determined by its number of:
23A. protons
24. An atom contains four orbitals, so it can hold up to _____ electrons.
24A. 8
25. The 7d orbital holds _____ electrons.
25A. 10
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CHEMISTRY