Tasting PTC is a dominant expression. You have a mother who is a non-taster for PTC and father who is a taster. You are a non-taster. What is the genotype of your mother and father? Who knows how to do this

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.