You can't find "non-conductors" as a specific category on the periodic table. Instead, you need to look for the elements classified as nonmetals and metalloids. Here's why:

* Nonmetals: These are generally poor conductors of heat and electricity. They often exist as gases, liquids, or brittle solids at room temperature. Examples include:

* Group 17 (halogens): Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), Astatine (At)

* Group 18 (noble gases): Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn)

* Oxygen (O), Nitrogen (N), Carbon (C), Phosphorus (P), Sulfur (S), Selenium (Se), etc.

* Metalloids: These elements have properties that fall between metals and nonmetals. Some metalloids are semiconductors, meaning they can conduct electricity under certain conditions. Examples include:

* Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), Polonium (Po)

Important Note: Even within nonmetals and metalloids, there are exceptions. For example, graphite (a form of carbon) is a good conductor of electricity, while diamond (another form of carbon) is a good insulator.

So, while there isn't a dedicated "non-conductors" section on the periodic table, you can generally find them by focusing on the nonmetal and metalloid regions.