Chemical Elements
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JOHN_BASH
Expert in mushrooms and fungi
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CHEMISTRY
Chemical Elements
Potassium
Potassium’s fiery dance with water reveals its explosive nature and elemental power
11 days ago
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Why does potassium react so vigorously with water compared to many other metals?
Because it is a heavy metal that sinks in water and reacts slowly
Because it has a single valence electron that is easily lost, forming a highly reactive ion
Because it naturally occurs as a pure metal that reacts with water by default
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SteveO1
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CHEMISTRY
Chemical Elements
Molecular Hydrogen (H2)
Molecular hydrogen powers stars and forms the foundation of the universe's matter
7 Feb 2026
0
Why is molecular hydrogen (H2) more stable than single hydrogen atoms?
Because hydrogen atoms lose electrons to become stable ions.
Because hydrogen atoms exist naturally only as single atoms, not molecules.
Because two hydrogen atoms form a stable covalent bond, reducing reactivity.
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Stevex
Love life
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CHEMISTRY
Chemical Elements
Polonium
Polonium is a rare, intensely radioactive metal found only in trace amounts in uranium ores
21 Jan 2026
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What is the primary reason polonium is found only in trace amounts naturally?
Because all its isotopes have short half-lives and it is produced as a decay product of uranium-238
Because it is highly reactive and quickly forms stable compounds in the environment
Because it is artificially produced and does not occur naturally at all
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Steve_Alias
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CHEMISTRY
Chemical Elements
Polonium
Polonium is a rare, intensely radioactive metal with no stable isotopes and unique chemical traits
20 Jan 2026
0
Why is polonium-210 found only in trace amounts in nature?
Because it is produced abundantly in the Earth's crust but quickly reacts chemically
Because it is a stable isotope that does not undergo radioactive decay
Because it is a short-lived decay product of uranium-238 and quickly decays further
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