It’s gonna be which ever element(s) that has the same number of valence electrons!!
        
                    
             
        
        
        
Bent is the right answer did quiz
        
                    
             
        
        
        
The weighted average of a penny is = 67.9g
<h3>Calculation of average weight</h3>
The sample of penny for pre 1982 is a total of = 18 pennies.
The mass of each penny for pre 1982 = 3.1
Therefore the total weight for penny for pre 1982
 = 18×3.1
 = 55.8
The sample of penny for post 1982 is a total of = 32 pennies.
The mass of each penny for post 1982 = 2.5
Therefore the total weight for penny for post 1982
 
=32×2.5
= 80
The weighted average 
= 55.8+80/2
= 135.8/2
= 67.9g
learn more about mass here:
brainly.com/question/14156113
#SPJ1
 
        
             
        
        
        
Answer:
Ionic Bonds - A bond between metal and nonmetal elements. Involves transferring electrons. Covalent Bonds - Also known as molecular bonds. A bond between two nonmetals
 
        
                    
             
        
        
        
Because the atoms in a solid are structured like a brick :)