WikiCards · Card list · Science cards · Hydrogen halide
Common card · Science
Hydrogen halide, a Common card
In chemistry, hydrogen halides are diatomic, inorganic compounds that function as Arrhenius acids.
- Rarity
- Common
- Domain
- Science
- ATK
- 52
- DEF
- 41
- Power
- 93
- Wikipedia reads a year
- 8,800
Power 93 (ATK + DEF): stronger than 35 % of WikiCards cards.
Hydrogen halide quiz: 3 questions
Three questions on the Hydrogen halide card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
All known hydrogen halides are gases at standard ______ and pressure.
Answer
temperature. All known hydrogen halides are gases at standard temperature and pressure. From the Hydrogen halide article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Robert S. Mulliken. Robert S. Mulliken 61 · Yuri Matiyasevich 58 · Paul Sabatier 55 · Hydrogen halide 52 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 formula is HX where X is one of the halogens: fluorine, chlorine, bromine, iodine, astatine, or tennessine.
- All known hydrogen halides are gases at standard temperature and pressure.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Hydrogen halide article was read about 8,800 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 52 and blocks with 41: each hit it takes is cut by 16 %.
How to get Hydrogen halide
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 halide in the power ranking, all domains together.
- Arnaldus de Villa NovaCommon · Science · ATK 56 DEF 37
- EmilyCommon · Nature · ATK 54 DEF 39
- Haggis pakoraCommon · Society · ATK 54 DEF 39
- Juanjo GuarnidoCommon · Arts · ATK 55 DEF 38
- Slide HamptonCommon · Arts · ATK 61 DEF 32
- Haemanthus coccineusCommon · Nature · ATK 51 DEF 42
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
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- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Hydrogen halide (revision), CC BY-SA 4.0. Photo : Streng, Public domain, Wikimedia Commons.

