Name ___________________________________ Date_________________ Blk_________ 
       
                                   Unit 4 Review - The Periodic Table  
       
      Directions: Fill in the blank or circle the correct answer. 
       
      1.  Where are the most reactive metals located? ____lower left_____________ 
       
      2.  As you go from left to right across a period, the atomic radius (decreases/increases). 
       
      3.  As you travel down a group, the atomic radius (decreases/increases). Why? _number of energy__ 
         levels increase/shielding effect increases 
       
      4.  A negative ion is (larger/smaller) than its parent atom. 
       
      5.  A positive ion is (larger/smaller) than its parent atom. 
       
      6.  As you go from left to right across a period, the ionization energy generally (decreases/increases).  
       
      7.  As you go down a group, the ionization energy generally (decreases/increases). 
       
      8.  Drastic jumps in ionization energy are caused by __the break up of full of half full sublevels___ 
                   2                 3
         ____Ex. 2s  (full sublevel) or 2p  (half-full sublevel) __________________________________ 
      9.  Elements in group 1 are called _____Alkali Metals_________________ 
       
      10. Elements in group 2 are called ____Alkaline Earth Metals___________________ 
       
      11. Elements in group 3-12 are called ___Transition metals/elements_____________ 
       
      12. As you go from left to right across the periodic table, the elements go from (metals/nonmetals) to 
         (metals/nonmetals). 
       
      13. Group 17 elements are called ____Halogens______________________ 
       
      14. Group 18 elements are called ____Noble Gases___________________________ 
       
      15. What sublevels are filling across the Transition Elements? __d and f (inner)______ 
        
      16. Elements within a group have a similar number of _____valence electrons_____ 
       
      17. Elements across a period have the same number of ___valence shells/energy levels_____ 
       
      18.  As you go down a group, the elements generally have a (higher/lower) nuclear charge. 
       
      19. The majority of elements in the periodic table are (metals/nonmetals) 
       
      20. Elements in the periodic table are arranged according to their __atomic number____ 
       
      21. An element with both metallic and nonmetallic properties is called a __metalloid__ 
       
      22. Which group of elements has the lowest electronegativity of all ___Noble Gases_____. 
       Directions: Fill in the blank using the following word list. 
        
       actinoid series                        group                                  period 
       alkali metals                          halogen                                periodic law 
       alkaline earth metals                  lanthanoid series                      periodic table 
       atomic mass                            metal                                  nonmetal  
       atomic number                          semimetal                              transition element 
       family                                 noble gas  
        
        
              Dimitri Mendeleev developed a chartlike arrangement of                 
       the  elements called the _____(1)______. He stated that if the                
       elements  were  listed  in  order  of  increasing  ______(2)______,          1.  ___periodic table_______ 
       their properties repeated in a regular manner. He called this the             
       ______(3)______ of the elements. The arrangement used today                  2.  ___atomic mass_______ 
       differs from that of Mendeleev in that the elements are arranged              
       in  order of increasing _____(4)______. Each horizontal row of               3.  ____periodic law_______ 
       elements is called a(n)_____(5)______. Each vertical column is