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WikiCards · Card list · Science cards · Hydrogen atom
Uncommon card · Science
Hydrogen atom, an Uncommon card
A hydrogen atom is an atom of the chemical element hydrogen.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 73
- DEF
- 57
- Power
- 130
- Wikipedia reads a year
- 100,000
Power 130 (ATK + DEF): stronger than 65 % of WikiCards cards.
Hydrogen atom quiz: 3 questions
Three questions on the Hydrogen atom card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
In everyday life on Earth, ______ hydrogen atoms are extremely rare.
Answer
isolated. In everyday life on Earth, isolated hydrogen atoms are extremely rare. From the Hydrogen atom article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Maurice Merleau-Ponty. Maurice Merleau-Ponty 77 · Hydrogen atom 73 · Strabo 70 · Ice giant 65 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- The electrically neutral hydrogen atom contains a single positively charged proton in the nucleus, and a single negatively charged electron bound to the nucleus by the Coulomb force.
- Atomic hydrogen constitutes about 74% of the baryonic mass of the universe.
- In everyday life on Earth, isolated hydrogen atoms are extremely rare.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Hydrogen atom article was read about 100,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 73 and blocks with 57: each hit it takes is cut by 23 %.
How to get Hydrogen atom
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Hydrogen atom in the power ranking, all domains together.
- Alex YeeUncommon · Society · ATK 74 DEF 56
- Atom EgoyanUncommon · History · ATK 71 DEF 59
- BarberUncommon · Society · ATK 70 DEF 60
- J. Paul Getty MuseumUncommon · Arts · ATK 69 DEF 61
- Jana NovotnáUncommon · Society · ATK 72 DEF 58
- Marco SturmUncommon · Society · ATK 71 DEF 59
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Hydrogen atom (revision), CC BY-SA 4.0. Photo : Hydrogen-1.png : User:Joanjoc derivative work: Gregors ( talk ) 13:57, 17 March 2011 (UTC), CC BY-SA 3.0, Wikimedia Commons.
