WikiCards · Card list · Science cards · Ozone
Rare card · Science
Ozone, a Rare card
Ozone, also called trioxygen, is an inorganic molecule with the chemical formula O3.
- Rarity
- Rare
- Domain
- Science
- ATK
- 91
- DEF
- 79
- Power
- 170
- Wikipedia reads a year
- 240,000
Power 170 (ATK + DEF): stronger than 85 % of WikiCards cards.
Ozone quiz: 3 questions
Three questions on the Ozone card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
It is a pale-blue gas with a distinctively ______ odour.
Answer
pungent. It is a pale-blue gas with a distinctively pungent odour. From the Ozone article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Ozone. Ozone 91 · Marshall McLuhan 86 · Imperial units 82 · Borei-class submarine 77 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.
- It is a pale-blue gas with a distinctively pungent odour.
- It is an allotrope of oxygen that is much less stable than the diatomic allotrope O2, breaking down in the lower atmosphere to O2.
- Ozone is formed from dioxygen by the action of ultraviolet light and electrical discharges within the Earth's atmosphere.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Ozone article was read about 240,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 91 and blocks with 79: each hit it takes is cut by 32 %.
How to get Ozone
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 Ozone in the power ranking, all domains together.
- Menstrual cycleRare · Nature · ATK 77 DEF 93
- HeavenRare · Society · ATK 80 DEF 90
- Georges MélièsRare · History · ATK 80 DEF 90
- SuzhouRare · Society · ATK 84 DEF 86
- CremationRare · Nature · ATK 85 DEF 85
- Marshall McLuhanRare · History · ATK 86 DEF 84
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, Ozone (revision), CC BY-SA 4.0. Photo : Д.Ильин : vectorization, CC0, Wikimedia Commons.





