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WikiCards · Card list · Science cards · Band gap
Uncommon card · Science
Band gap, an Uncommon card
In solid-state physics and solid-state chemistry, a band gap, also called a bandgap or energy gap, is an energy range in a solid where no electronic states exist.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 67
- DEF
- 60
- Power
- 127
- Wikipedia reads a year
- 70,000
Power 127 (ATK + DEF): stronger than 60 % of WikiCards cards.
Band gap quiz: 3 questions
Three questions on the Band gap card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
It is the energy required to promote an electron from the valence band to the ______ band.
Answer
conduction. It is the energy required to promote an electron from the valence band to the conduction band. From the Band gap article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Algebraic variety. Algebraic variety 74 · Fuel 71 · Band gap 67 · Battle of Rocroi 63 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.
- In graphs of the electronic band structure of solids, the band gap refers to the energy difference between the top of the valence band and the bottom of the conduction band in insulators and semiconductors.
- It is the energy required to promote an electron from the valence band to the conduction band.
- The resulting conduction-band electron are free to move within the crystal lattice and serve as charge carriers to conduct electric current.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Band gap article was read about 70,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 67 and blocks with 60: each hit it takes is cut by 24 %.
How to get Band gap
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 Band gap in the power ranking, all domains together.
- SafetyUncommon · Science · ATK 70 DEF 57
- FuelUncommon · Science · ATK 71 DEF 56
- Battle of RocroiUncommon · History · ATK 63 DEF 64
- Ettore MajoranaUncommon · Science · ATK 70 DEF 57
- Ron LeshemUncommon · Arts · ATK 68 DEF 59
- Abdul Halim of KedahUncommon · History · ATK 68 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, Band gap (revision), CC BY-SA 4.0. Photo : Chetvorno, CC0, Wikimedia Commons.
