The sun of the protons a D neutrons in the nucleus of an atom is called the ATOMIC MASS
Answer:
The lowest one cuz its low and the highest is like 100 or sumthin
Explanation:
I used my 5head
Look at the periodic table the element next at the right of Cl is the Ar and the atomic mass is 39.948 is bigger than the Cl 35.45. All the elements after that has mases bigger than Cl.