U+6C15 "氕" CJK Unified Ideograph-# Unicode Character

U+6C15 "氕" CJK Unified Ideograph-# is a Chinese character (Hanzi) that represents the element protium, specifically the most common isotope of hydrogen with an atomic mass of 1. It belongs to the CJK (Chinese, Japanese, and Korean) Unified Ideographs block in the Unicode standard, used for writing East Asian languages. The character is composed of the radical for "gas" or "air" (气) combined with a phonetic component indicating its pronunciation and meaning related to the "first" or "light" isotope of hydrogen. This ideograph is typically used in scientific contexts, particularly in chemistry and nuclear physics, to distinguish protium from other hydrogen isotopes like deuterium (氘) and tritium (氚).