Plz help me complete this table

9,19,9,10,9,F

15,29,14,15,14,Si

22,47,22,25,22,Ti

25,55,25,30,25,Mn

35,80,35,45,35,Br

8,16,8,8,8,O

47,108,47,61,47,Ag

16,32,16,16,16,S

82,207,82,125,82,Pb

Explanation:

Atomic number = number of protons = number of electrons

Mass number = number of protons + number of nuetrons

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.