Periodic Table quiz
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What are the horizontal rows across the periodic table called?
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More questions about Periodic Table
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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Which precious metal has the chemical symbol Ag?
Answer: Silver
Why: Argentina derived its name from argentum after early European explorers believed the region held vast silver riches.
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Which element was the heaviest stable element until 2003?
Answer: Bismuth
Why: Bismuth-209 has a half-life of over a billion times the estimated age of the universe.
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Which English letter never appears in any element symbol?
Answer: J
Why: The letter Q was formerly used in systematic temporary names like ununquadium before official element designations were assigned.
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Which element is the main semiconductor in modern computer chips?
Answer: Silicon
Why: Silicon's ability to switch between conducting and insulating electricity paved the way for Silicon Valley.
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What historical Latin root explains the chemical symbol for sodium?
Answer: Natrium
Why: The word traces back to natron, a natural sodium carbonate salt ancient Egyptians mined to preserve mummies.
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What placeholder name did Mendeleev give to his predicted element gallium?
Answer: Eka-aluminium
Why: Mendeleev used the Sanskrit prefix eka, meaning one, to designate an element sitting one row below a known homologue.
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