Periodic Table Web Elements. Daniel Leppke 1 st Hour. Hydrogen (H). Hydrogen was discovered by Henry Cavendish at 1766 in London, England. Origin of name: from the Greek words "hydro" and "genes" meaning "water" and "generator“. Standard state: gas at 298 K. Lithium (Li).
• Standard state: solid at 298 K
Standard state: presumably a solid at 298 K