( there are 18 electrons in total when the three shells are completely full). The elements in the periodic table are organized in the same way as the electrons fill the shells. Shells fill from

212 degrees F, and 100 degrees C.

Explanation:

If the temperature is held constant (which requires some heat input, since evaporation cools things) the liquid will all evaporate. If the temperature is much above 212 F, the water will boil. That means that it wont just evaporate from the surface but will form vapor bubbles, which then grow, inside the liquid itself.   :)