created sense approved 氕 · piē · protium
氕
piē
protium
The most common isotope of hydrogen (1H), also known as light hydrogen, characterized by having no neutrons and an atomic weight of approximately 1.
氕是氢元素中最常见的同位素。
punctuation
氕
piē
protium
The most common isotope of hydrogen (1H), also known as light hydrogen, characterized by having no neutrons and an atomic weight of approximately 1.
氕是氢元素中最常见的同位素。
punctuation