Gravitational <span>force between them</span>
        
             
        
        
        
The answer is A! Hoped it’s sure! 
Explanation: A chemical reaction involves breaking bonds in the reactants, rearranging the atoms into new groupings (the products), and forming new bonds in the products.
Hope I was able to help! Mark me brainly it would help a lot!
        
             
        
        
        
Answer:
D. Electron pairs repelling each other push atoms apart
Explanation:
Hope this helps :) I just got it wrong on ap3x so I'm sure this is right
 
        
                    
             
        
        
        
B) Mg is the alkaline earth metal w/12 protons so following the periodic table to the halogen in the same period is 
Cl: Chlorine 
C) The Neutral noble has w/ 18 electrons is argon so the metal in the same row is 
Na: Sodium