The discussion centers on the abundance of light elements, specifically those with atomic numbers lower than 30, on Earth. This abundance is attributed to the elemental composition of our galaxy, which originated primarily from hydrogen and helium, with heavier elements formed in stars. Consequently, lighter elements are more prevalent due to their formation processes. Regarding the existence of elements in their atomic form, nitrogen exists as a diatomic molecule in the atmosphere, while many elements are found free or dissolved in oceans. Crystalline structures consist of tightly bonded atoms, often referred to as molecules, although isolated atoms are typically considered molecules as well. The noble gases are noted as the only truly isolated atoms found in nature, with the element of surprise also being mentioned as a unique case.
