The set of natural numbers ( 1, 2, 3, … 79 … 118 ) is the concept of “universal” elements. 
H is 1, He is 2, Li is 3 etcetera … etcetera. Chemistry is just numbers. Counting in “natural numbers” of #1 to #118 completes the set concept.
Gold is element number 79 with symbol “Au”. The observed electron configuration of “Au” gold is: {Xe core] 4f 14 5d 10 6s1. Instead of classical physics: [Xe core] 4f 14 5d 9 6s 2. The difference between the two formula is the “6s” orbital is 2 and “filled” in classical chemistry. “Element Electron Configuration Taste Traits” is a post in this blog with related ideas.
The concept of the chemical sense of taste (salty, bitter, sour, sweet) can be explained via the periodic table of chemical elements.
