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Name__________________ Date___________________ Period__________________ A#_________ 1. How many significant figures does each of the following have? a) 28.6______ b) 3440.______ c) 910______ d) .046_______ e) 10.06700_______ 3. Distinguish between a cation and anion. How does an element become a cation? Anion? 5. Write the complete orbital notation for Fluorine. 2. What is the difference between a graph representing data that are directly proportional and a graph of data that are inversely proportional? ____ 4. What is the periodic trend for atomic radii? Why? ___ 6. Without looking at the periodic table, identify the period, block, group, and # of valence electrons in which the following elements are located: a) [Ne] 3s23p4 b) [Kr] 5s24d105p2 7. Distinguish between ionic and covalent bonds. Give an example of each. 8. Properly name the following compounds: a) N2O b) SrCl2 c) CuNO2 9. Write the formula of the following: a) lead (II) nitrate ____________ b) aluminum sulfate ___________ c) sodium chromate ___________ 10. Calculate the formula mass of Mg(BrO4)2. 11. Name the following compounds: a) CO2 ____________________ 12. Write formulas for the following : a) Li + OH ______________________ b) Mg(OH)2 _______________ b) I + Ca ______________________ c) FeCl3 ________________ c) Al + Cl ______________________ d). SO3 _____________________ d) Zn and nitrate __________________ e) PBr5______________________ 13. Give the electron configuration for S -2 ____ 14. Balance the following equation and classify the kind of chemical reaction it is N2 + H2 → NH3 ___ 15. Write formulas for the following: a) Ammonium phosphate ____________ 16. Classify the reaction, predict the products, and write the balanced equation b) Dinitrogen tetroxide ____________ Classification _________________ c) Cobalt (II) hydroxide ____________ d) Mercury (II) chloride ____________ Mg + HNO3 → 17. How many grams are in 2.4 moles of KCl? 18. What is the mass in grams of 1.50 x 1015 atoms N? 19. How many moles are in 120.0g S? 20. Determine the mass in grams of 2.45 mol Zn.