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Which of the following elements exist as diatomic molecules?

A. Helium
B. Potassium
C. Nitrogen
D. Sulfur

User Ssh Quack
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c. nitrogen
the way I remember them is that the diatomic elements form a 7, starting with #7(nitrogen) 3 across 4 down; nitrogen, oxygen, fluorine, chlorine, bromine, iodine
User Tonycoupland
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