22 elements to memorize

Quiz yourself by guessing what should be in each of the black rectangles below before clicking on it to display the answer.
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element
symbol
hydrogen  H  
helium  He  
carbon  C  
nitrogen  N  
oxygen  O  
fluorine  F  
sodium  Na  
magnesium  Mg  
aluminum  Al  
sulfur  S  
chlorine  Cl  
potassium  K  
calcium  Ca  
titanium  Ti  
iron  Fe  
nickel  Ni  
copper  Cu  
zinc  Zn  
silver  Ag  
gold  Au  
lead  Pb  
platinum  Pl  


   

 
 

 
 

 

 
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