a. I b. Br c. Cl d. F e. All of these are the same size. 5. List the sublevels found on energy level three are. (4 pts)
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1 Name: Date: There are 19 questions on this examination totaling 104 points (scored out of 100 points). Specific point values are clearly stated on each problem. You have 1.25 hours to complete this examination and may only use a basic scientific calculator, and the periodic table provided. You may turn over the periodic table and use it as scratch paper. If you need additional scratch paper, please raise your hand. Please sign the honor code below. If you need further clarification, please raise your hand. Good Luck! HONOR CODE: I certify that the work presented in this examination is entirely my own work and that the rules set-forth for this examination were followed. Signature 1. The majority of the elements found on the period table are in the gas, liquid or solid (circle one) state and are metals, nonmetals, or metalloids. (circle one) (3 pts total; 1.5 pts each) 2. Which has the smallest atomic radius? (1.5 pts) a. I b. Br c. Cl d. F e. All of these are the same size. 3. Which atom loses electrons more easily: Ba or Ca? Circle one. (1.5 pts) 4. Which atom gains electrons more easily: Se or Po? Circle one. (1.5 pts) 5. List the sublevels found on energy level three are. (4 pts) 6. The total number of electrons that can be held on energy level 4 is. The total number of electrons that can be held in one 5p orbital is/are. (3 pts total ; 1.5 pts each) 7. There are two atoms of Cl: Cl-37 and Cl-35. Which is the most abundant in nature? (1.5 pts) 8. For a Br-83 atom, there are protons, neutrons, electrons, and a net charge of. The Lewis dot configuration of Br-83 (draw it here): (5 pts total, 1 pt ea) 9. For compounds with ionic bonds, (1.5 pts) a. atoms are held together by sharing electrons. b. oppositely charged ions are held together by strong electrical attractions. c. atoms of different metals form bonds. d. atoms of noble gases are held together by attractions between oppositely charged ions. 1
2 10. A metalloid found on Period 5 is. A Group 4A element is a shiny solid that is an excellent conductor of electricity. This element is most likely: (symbol). (3 pts total; 1.5 pts each) 11. The last valence electron of 92 U is on energy level and in a (either s, p, d or f) orbital. The element with the abbreviated electron configuration of [Ne] 3s 2 is and this element has valence electrons. The common name for elements in Group 7A is. (7.5 pts total; 1.5 pts each) 12. Please rank the following electromagnetic radiation in order of increasing wavelength. CIRCLE the highest energy EMR wave. (5 pts) Gamma rays red light Infrared Ultra-violet < < < Longest wavelength 13. The chemical formula for the compound formed between titanium (IV) and carbonate is. (2 pts) The chemical formula for the compound formed between calcium and chlorine is. (2 pts) 14. The complete electron configuration for potassium is: (5 pts) 15. The abbreviated electron configuration of Sb-122 is: (3 pts) 16. An element reacts, loses two electrons and has a final electron count of 36. This ion is (provide symbol and charge), this type of ion is called a and this ion has protons and neutrons. (6 pts total; 1.5 pts each) 2
3 17. Using your knowledge of Periodic trends: a. Rank the elements (Si, N, O) in order of increasing atomic size. (3 pts) < < Largest atom b. State the periodic trends governing atomic size. (3 pts) c. Please explain each periodic trend for atomic size. (4 pts) 3
4 18. Please provide either the chemical name or chemical formula in the following table. LITTLE PARTIAL CREDIT HERE and SPELLING COUNTS! (20 pt total; 2 pts each) Chemical Formula Chemical Name Iron(II) nitride CaBr 2 lithium sulfide carbon monoxide Fe 2 (SO 4 ) 3 NI 3 nitrate ion P 2 S 5 VO 2 sodium phosphide 4
5 19. Please fill-in the table below for the two compounds provided. Show ALL work in table below (or scratch sheet) for credit. No work, no credit, so make sure I can follow your notations! (18 pts total, Lewis Structures are 6 pts each, 3 pt for geometry.) Compound Lewis Dot Structure VSEPR Molecular Geometry and valence e - PBr 3 SeO 3 5
6 Reference Sheet 6
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