Did you know that each element has a symbol made of letters and numbers? Examples of elements include carbon. Carbon is in carbon dioxide, which has the chemical number C, and its atomic number is 6. It is a greenhouse gas that works to trap heat close to the earth. Magnesium is essential for muscle and nerve health, and it See morehas the symbol Mg and the atomic number 12. You absolutely must take this quiz.
Na
C
O
Si
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H
He
K
Fe
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C
Ca
Cl
N
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N
H
Ca
P
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P
K
H
Ar
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Mg
Fe
He
H
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Si
Na
Al
Ca
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Ca
Cl
C
Si
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Si
P
Mg
Ar
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Al
Ar
P
O
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P
K
Si
Fe
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Fe
N
C
Mg
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C
Cl
Ca
K
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H
He
N
Mg
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