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Periodic Table Review

1 2
3              
   
4               5 6  
7   8            
  9     10         11 12    
          13          
14                   15    
           
16 17               18               19
          20    
  21                    
           
    22               23 24      
         
25                
  26       27  
28       29    
  30            
31           32      
   
33           34     35  
     
  36    

Across
3.average atomic mass of 7 amu
4.lightest element on periodic table
8.average atomic mass of oxygen
9.has one less proton than calcium
13.has 53 protons
14.alkaline earth metal in period 4
16.heaviest alkali metal
18.would have 7 electrons when neutral
20.chemical symbol is Sn
21.has 9 protons
22.usually has 5 neutrons
24.group vanadium is in
25.group 4 and period 4
26.average atomic mass of 12 amu
28.26 protons
30.has one more proton than nickel
31.chemical symbol is Pb
32.chemical symbol is Au
33.has one more proton than phosphorus
34.noble gas in period 3
36.atomic number of neon
Down
1.group 17 period 3
2.heaviest element in period 5
5.14 protons
6.lightest noble gas
7.has an average atomic mass of 65 amu
10.located below boron on the table
11.atomic number 25
12.period 4 group 17
15.the second element down in group 4
17.heaviest alkaline earth metal
19.valuable metal below copper on the table
21.period nickel is in
23.also the name of a planet and in period 6 group 12
25.period number of phosphorus
27.lightest element in group 16
29.lightest element in period 3
33.number of protons in carbon
35.number of protons in a hydrogen atom

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