Ionic bonding crossword

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