Answer:
Subtract the charge from the atomic number. When an ion has a positive charge, the atom has lost electrons. To calculate the remaining number of electrons, you subtract the amount of extra charge from the atomic number. In the case of a positive ion, there are more protons than electrons.
Explanation:
 
        
                    
             
        
        
        
Answer:
SEE BELOW
Explanation:
Glucose (C6H12O6) is an organic compound composed of the elements carbon, hydrogen and oxygen.
 
        
             
        
        
        
Answer: 4
Explanation:
4 is the only one that has to products as well as having the plus at the bottom
 
        
             
        
        
        
Magnesium will give two electrons to oxygen and both will become ions.