Unit 4 Test – Chemistry I – Fall 2002 – Form A

1. What is the maximum number of electrons that can occupy any one orbital?
(A) 1 (B) 2 (C) 3 (D) 4

2. Which energy level has no “f” sublevel?
(A) 5 (B) 6 (C) 3 (D) 4

3. The total number of orbitals in a “d” sublevel is
(A) 1 (B) 5 (C) 7 (D) 3

4. The greatest absorption of energy occurs as an electron moves from
(A) 1s to 2s (B) 4d to 3s (C) 3p to 3s (D) 4s to 3p

5. In an atom, the “s” sublevel has
(A) 1 orbital (B) 3 orbitals (C) 5 orbitals (D) 7 orbitals

6. What is the maximum number of sublevels in the 3^rd energy level?
(A) 3 (B) 4 (C) 18 (D) 32

7. Energy is released when an electron changes from a sublevel of
(A) 1s to 2p (B) 2s to 3s (C) 3s to 2s (D) 3p to 5s

8. What is the atomic number of the atom whose electron configuration is 1s² 2s² 2p¹?
(A) 5 (B) 8 (C) 3 (D) 2

9. The electron configuration for aluminum is
(A) 1s² 2s² 2p³ 3s² 3p³ 3d¹ (B) 1s² 2s² 2p⁶ 3s² 2d¹
(C) 1s² 2s² 2p⁶ 3s² 3p¹ (D) 1s² 2s² 2p⁹

10. In a neon light, when is light given off?
(A) when protons return to the nucleus (B) when electrons jump to higher energy levels
(C) when electrons collide (D) when electrons return to their ground state

11. The correct notation for the barium atom is
(A) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² (B) [Xe] 6s²
(C) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ (D) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

12. An atom that has an electron configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵ is classified as
(A) an alkali metal (B) an alkaline earth metal
(C) a transition metal (D) a noble gas

13. The electron configuration for the carbon atom is
(A) 1s² 2s² 2p² (B) [He] 2s⁴ (C) [Ne] 2s² 2p² (D) 1s² 2p⁴

14. If three electrons fill an empty “p” sublevel, how will the electrons be distributed in the three orbitals?
(A) one in each orbital
(B) two electrons in one orbital, one in another orbital
(C) three electrons in one orbital, none in the others

15. If 10 units of energy moves an electron to a higher energy level, how much energy is released when the
electron returns to its normal energy level?
(A) 20 units (B) 10 units (C) 5 units (D) 0 units

16. The maximum number of electrons that can occupy a “d” sublevel is
(A) 5 (B) 6 (C) 7 (D) 10

17. Which has the shortest wavelength?
(A) ultraviolet (B) visible light (C) x-rays (D) infrared

18. Which energy level holds a maximum of 18 electrons?
(A) 2 (B) 3 (C) 4 (D) 5

19. Which one of these sublevels has the highest energy?
(A) 4f (B) 5f (C) 6p (D) 7s

20. Which of these sublevels does NOT exist?
(A) 2d (B) 3s (C) 3d (D) 4f

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