What element does "O" represent on the periodic table?

The letter "O" on the periodic table represents Oxygen. Each element on the periodic table is assigned a unique one- or two-letter symbol, often derived from its English or Latin name. In this case, "O" is the designated symbol for Oxygen, which is a vital element for life on Earth as it is essential for respiration in most living organisms.

Oxygen is a colorless, odorless gas at room temperature and constitutes about 21% of the Earth's atmosphere. It plays a key role in combustion, cellular respiration, and the formation of water, making it crucial for various biological and chemical processes. The other elements listed in the options are represented by different symbols; for instance, Osmium is represented by "Os," Gold by "Au," and Silver by "Ag." This understanding of element symbols is fundamental in studying chemistry and the periodic table.