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Periodic Table Quiz — Test Your Element Knowledge

The periodic table of elements is one of science's greatest achievements, organizing all known elements by their properties and atomic structure. Whether you're a chemistry student, science enthusiast, or just curious about the building blocks of matter, this quiz will test your knowledge of elements, their symbols, atomic numbers, and fascinating characteristics. From hydrogen to oganesson, see how well you know the periodic table and discover some surprising facts along the way!

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Sample Questions

Click any question to reveal the answer and a fun fact.

1What is the chemical symbol for gold?Reveal ›
AGo
BGd
CAu✓
DAg
💡Gold's symbol comes from its Latin name 'aurum,' making it one of the oldest known elements.
2How many elements are currently on the periodic table?Reveal ›
A92
B104
C118✓
D125
💡The 118th element, oganesson, was officially named in 2016 and is a synthetic superheavy element.
3Which element has atomic number 1?Reveal ›
AHelium
BHydrogen✓
CLithium
DCarbon
💡Hydrogen is the most abundant element in the universe, making up roughly 75% of all matter.
4What does the atomic number represent?Reveal ›
AMass of the atom
BNumber of protons✓
CNumber of neutrons
DElectron shells
💡The atomic number determines an element's identity and position on the periodic table.
5Which noble gas is the most abundant in Earth's atmosphere?Reveal ›
AArgon✓
BNeon
CHelium
DXenon
💡Argon makes up about 0.93% of Earth's atmosphere and is completely inert and colorless.
6What is the most electronegative element on the periodic table?Reveal ›
AOxygen
BChlorine
CFluorine✓
DNitrogen
💡Fluorine's extreme electronegativity makes it the strongest oxidizing agent known to chemistry.
7Which transition metal is essential for oxygen transport in blood?Reveal ›
ACopper
BIron✓
CZinc
DNickel
💡Iron in hemoglobin binds oxygen molecules, allowing them to be transported throughout the body.
8What is the heaviest naturally occurring element?Reveal ›
AUranium✓
BPlutonium
CThorium
DFrancium
💡Uranium-238, the most common isotope, has a half-life of 4.5 billion years, roughly the age of Earth.
9Which element has the electron configuration [He] 2s² 2p⁶?Reveal ›
ANeon✓
BOxygen
CCarbon
DBeryllium
💡Neon's complete electron shells make it extremely stable and unable to form chemical bonds.
10What is the melting point trend across a period on the periodic table?Reveal ›
AConstantly decreases
BGenerally increases✓
CRemains constant
DVaries unpredictably
💡Melting points peak at group 14 (carbon group) and then decrease toward the halogens and noble gases.

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