question_answer

What is the simplest evidence in nature that you can think of to suggest that atoms are not point particles?                              

Answer:

                Brownian motion is the simplest evidence in nature to suggest that atoms are not point particles but have finite size. The particles suspended in a fluid move in the direction of the unbalanced force due to the unequal bombardment caused by the atoms or molecules of the fluid in which they are suspended. This shows that the atoms have finite size.