There are 118 known chemical elements. How many of these occur naturally?

1. The text distinguishes between the total number of known elements and the subset that occurs in nature. 2. It states: "There are 118 elements, but only 92 occur naturally. The remaining elements are synthesized in laboratories and are unstable." 3. So the elements beyond the 92nd are all laboratory-synthesized and unstable, not naturally occurring. 4. This means the correct count of naturally occurring elements is 92, not 100, 108, or all 118. _Source: OpenStax Biology Ch 2 "The Chemical Foundation of Life", p.33 §2.1 | Atoms, Isotopes, Ions, and Molecules: The Building Blocks_