The First Twenty Elements

What are the first 20 elements of the periodic table?
Quiz by TenThousand
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Last updated: February 10, 2016
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First submittedFebruary 10, 2016
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Average score80.0%
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element
hydrogen
helium
lithium
beryllium
boron
carbon
nitrogen
oxygen
fluorine
neon
element
sodium
magnesium
aluminium
silicon
phosphorus
sulfur
chlorine
argon
potassium
calcium
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