Answer:
Classification will be Potassium, Bromine, and Argon
Explanation:
- Potassium is more likely to lose electrons and form positive ion
- Bromine actually gain electrons and forms negative ion
- Argon does not lose or gain electrons
 
        
             
        
        
        
Answer:
a -4
b - 8
c - 5
d 2
Explanation:
Significant Figures: The number of digits used to express a measured or calculated quantity. By using significant figures, we can show how precise a number is. ... Accuracy: Refers to how closely individual measurements agree with the correct or true value.
 
        
             
        
        
        

▶To check the nature of food items. 
▶To check the nature of soil .
 
        
                    
             
        
        
        
No, There are not likely to form in areas that experience a lot of erosion on a daily basis.