Símbols químics

Crossword

Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
    1      2             
3     4                  
  5     6                
                   
           7          
  8     9                
                   
10           11            
                   
       12    13      14        
     15                
            16         
    17                 
    18          19     20      
                   
  21   22              23      
           24