Both mass and weight are measured by using scales.
Answer:
Ba>Sn>Pb>As>S
Explanation:
Hello,
In this case, we can write the atomic radius for the given elements:

In such a way, the required order is:
Ba>Sn>Pb>As>S
This is also in agreement as a periodic trend which states that the higher the period, the higher the radius.
Regards.
A gas can be treated as ideal gas when it is at higher temperatures or low pressures relative to its critical temperature and pressure. Because, at high temperatures and low pressures, the density of gas decreases and at low densities real gases behave as ideal gases.