3. Here are the boiling points of certain elements in degrees Celsius:
   o Argon: -185.8
   o Chlorine: -34
   o Fluorine: -188.1
   o Hydrogen: -252.87
   o Krypton: -153.2
   List the elements from least to greatest boiling points.

First, let’s line them up in order of their boiling points! Starting with hydrogen at -252.87°C, followed by fluorine at -188.1°C, then argon at -185.8°C, krypton at -153.2°C, and finally chlorine at -34°C. So the sequence from least to greatest boiling points is: Hydrogen, Fluorine, Argon, Krypton, and Chlorine.

Now, isn’t it fascinating that the gases we breathe or use in labs have such drastically different boiling points? For instance, while chlorine can be easily liquefied, hydrogen is much more difficult due to its super low boiling point, making it a real challenge for scientists in handling!