# atomic number 1
## Noun (N)
### Sense: a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
- ก๊าซไฮโดรเจน
- เลขอะตอม 1
- ไฮโดรเจน