File:Hydrogen_discharge_tube.jpg · Wikimedia Commons · See Wikimedia Commons
Key facts
- Appearance
- Colorless gas
via Wikipedia infobox
~7 min read
Encyclopedic overview
– ↑ H ↓ Li
(none) ← hydrogen → helium
Excerpted from Wikipedia’s “Template:Infobox hydrogen” article, available under the CC BY-SA 4.0 licence.