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WikiCards · Card list · Science cards · Copper(II) oxide
Uncommon card · Science
Copper(II) oxide, an Uncommon card
Copper oxide or cupric oxide is an inorganic compound with the formula CuO.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 56
- DEF
- 46
- Power
- 102
- Wikipedia reads a year
- 45,000
Power 102 (ATK + DEF): stronger than 45 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- A black solid, it is one of the two stable oxides of copper, the other being Cu2O or copper oxide.
- As a mineral, it is known as tenorite, or sometimes black copper.
- It is a product of copper mining and the precursor to many other copper-containing products and chemical compounds.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Copper(II) oxide article was read about 45,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 56 and blocks with 46: each hit it takes is cut by 18 %.
How to get Copper(II) oxide
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.
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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, Copper(II) oxide (revision), CC BY-SA 4.0. Photo : User Walkerma on en.wikipedia, Public domain, Wikimedia Commons.
