Atomic number The atomic number of each element is different than other Elements.
        
                    
             
        
        
        
Nearly every cell in a person's body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA)
        
                    
             
        
        
        
IT forms because they are highly reactive elements.