Which element has the largest atomic radius?

Be
F
Ga
Ba

Ba

Explanation:

The trend for atomic radius is that it increases as you go down and decreases as you go right.

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.

i think its 100.

hope this !