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flag English language

Which chemical element has the symbol Cr?
chromium
copper
cerium
chlorine
Cr is the chemical symbol of chromium. Cu stands for copper, Ce - cerium, Cl - chlorine.
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Very interesting!

flag Polish language

Który pierwiastek chemiczny jest oznaczony symbolem Cr?
chrom
miedź
cer
chlor
Cr to symbol chemiczny chromu. Cu oznacza zaś miedź, Ce - cer, Cl - chlor.
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Very interesting!

flag German language