1. UNIT 4 CHECKPOINT Not for points, just for practice!

2. Which of the elements would be the least reactive metal? 1.13-Aluminum 2.14-Silicon 3.17-Chlorine 4.12- Magnesium 5.16-Sulfur 1234567891011121314151617181920 21222324252627282930

3. Which element in period 4 will have the highest electronegativity? 1.Potassium 2.Calcium 3.Germanium 4.Selenium 5.Bromine 1234567891011121314151617181920 21222324252627282930

4. Which element in period 4 will have the largest atomic radius? 1.Potassium 2.Calcium 3.Germanium 4.Selenium 5.Bromine 1234567891011121314151617181920 21222324252627282930

5. Which element in period 4 will have the lowest ionization energy? 1.Potassium 2.Calcium 3.Germanium 4.Selenium 5.Bromine 1234567891011121314151617181920 21222324252627282930

6. Which element in period 4 will have 4 valence electrons? 1.Potassium 2.Calcium 3.Germanium 4.Selenium 5.Bromine 1234567891011121314151617181920 21222324252627282930

7. Which element in period 4 will have an oxidation number of 1-? 1.Potassium 2.Calcium 3.Germanium 4.Selenium 5.Bromine 1234567891011121314151617181920 21222324252627282930

8. Who proposed the theory that properties of elements are periodic functions of their atomic numbers? 1.Newlands 2.Dobereiner 3.Moseley 4.Mendeleev 5.Pehanic 1234567891011121314151617181920 21222324252627282930

9. 32-Germanium is in what family of the periodic table? 1.Alkali Metals 2.Alkaline Earth Metals 3.Transition Metals 4.Inner Transition Metals 5.Post Transition Metals 6.Halogens 7.Noble Gases 8.Metalloids 9.Other Nonmetals 1234567891011121314151617181920 21222324252627282930

10. 56-Barium is in what family of the periodic table? 1.Alkali Metals 2.Alkaline Earth Metals 3.Transition Metals 4.Inner Transition Metals 5.Post Transition Metals 6.Halogens 7.Noble Gases 8.Metalloids 9.Other Nonmetals 1234567891011121314151617181920 21222324252627282930

11. An atom of sodium has 11 protons, 12 neutrons, and 10 electrons. What is its mass number? 1.21 2.22 3.23 4.22.989 1234567891011121314151617181920 21222324252627282930

12. 37-Rubidium would have all of the following characteristics except? 1.High Conductivity 2.High Malleability 3.High Brittleness 4.Solid at Room Temperature 5.1 Valence Electron 1234567891011121314151617181920 21222324252627282930

13. 34-Selenium would have how many valence electrons? 1.2 2.4 3.6 4.7 5.8 1234567891011121314151617181920 21222324252627282930

14. Which of the following is a nonmetal? 1.3-Lithium 2.16-Sulfur 3.49-Indium 4.51-Antimony 5.58-Cerium 1234567891011121314151617181920 21222324252627282930

15. What is the oxidation number for 20-Calcium? 1.1+ 2.2+ 3.6+ 4.1- 5.2- 6.6- 1234567891011121314151617181920 21222324252627282930

16. Which element is most likely man- made (not naturally occurring)? 1.5-Boron 2.17-Chlorine 3.38-Strontium 4.46- Palladium 5.95-Americium 1234567891011121314151617181920 21222324252627282930

17. How many valence electrons do the transition metals have? 1234567891011121314151617181920 21222324252627282930 1.One valence electron 2.Two valence electrons 3.Three valence electrons 4.Variable number of valence electrons 5.Zero valence electrons