<span>you have to find the differences of electronegativity for the atoms joined by the bond. if their diff is <0.4, 
then it's non-polar
if it's between 0.4 to 1.7 
then it's polar
1.7 and up it's ionic
Electronegativity values can be found on most periodic tables.</span>
        
             
        
        
        
Answer: Within each element square, information on the element's symbol, atomic number, atomic mass, electronegativity, electron configuration, and valence numbers can be found. At the bottom of the periodic table is a two row block of elements that contain the lanthanoids and actinides.
 
        
             
        
        
        
Answer:
500
Explanation:
from the average and if yoy multiple and then add your % and x you would get 500 to 600
 
        
             
        
        
        
1 is b 2 is a 3 is d 4 is a 5 is c