the image below is not accurate because... ...you cant have this many atoms in such a small space. ...there…

the image below is not accurate because... ...you cant have this many atoms in such a small space. ...there should only be one type of atom. ...the lighter atoms should be moving faster than the heavier ones. ...nonsense! this is an accurate representation.
Answer
Brief Explanations:
In a gas - like situation depicted, according to the kinetic - molecular theory, lighter atoms should move faster than heavier ones at the same temperature. This principle is not reflected in the image.
Answer:
...the lighter atoms should be moving faster than the heavier ones.