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WikiCards · Card list · Science cards · Hydrogen bond
Uncommon card · Science
Hydrogen bond, an Uncommon card
In chemistry, a hydrogen bond is a specific type of molecular interaction that exhibits partial covalent character and cannot be described as a purely electrostatic force.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 76
- DEF
- 82
- Power
- 158
- Wikipedia reads a year
- 110,000
Power 158 (ATK + DEF): stronger than 80 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- It occurs when a hydrogen atom, covalently bonded to a more electronegative donor atom or group, interacts with another electronegative atom bearing a lone pair of electrons, the hydrogen bond acceptor.
- Unlike simple dipole–dipole interactions, hydrogen bonding arises from charge transfer, orbital interactions, and quantum mechanical delocalization, making it a resonance-assisted interaction rather than a mere electrostatic attraction.
- The general notation for hydrogen bonding is Dn−H···Ac, where the solid line represents a polar covalent bond, and the three dots indicate the hydrogen bond.
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 bond article was read about 110,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 76 and blocks with 82: each hit it takes is cut by 33 %.
How to get Hydrogen bond
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
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Credits
Text : Wikipedia, Hydrogen bond (revision), CC BY-SA 4.0. Photo : User Qwerter at Czech wikipedia: Qwerter . Transferred from cs.wikipedia to Commons by sev, Public domain, Wikimedia Commons.
