Chemical entity
type: Concept
narrower: Protium

Protium
type: Entity
type: Concept
created: 2022-02-07T17:00:00
modified: 2022-09-20T08:49:40
broader: Chemical entity
definition: [ChEBI] The stable isotope of hydrogen with relative atomic mass 1.007825 and a natural abundance of 99.9885 atom percent (from Greek πρωτοσ, first).
in scheme: ozcar-theia