Rare card
Hydrogen line
- Value
- 50 W
- Attack
- 258
- Defence
- 206
- Players
- 0
The hydrogen line, 21 centimeter line, or H I line is a spectral line that is created by a change in the energy state of solitary, electrically neutral hydrogen atoms.
Get Hydrogen line in your collection
Every Wikilord card is a Wikipedia article. Open packs for free, trade, battle and climb the leaderboard.
Open a free pack