Which of the following is a diatomic molecule?

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A Oxygen (O2)
B Helium (He)
C Phosphorus (P4)
D Sulphur (S8)

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Answer: A. Oxygen (O2)

Answer: (a) Oxygen (O2)
Explanation: Diatomic molecules consist of two atoms. Oxygen (O2) is diatomic, Helium is monatomic, Phosphorus is tetra-atomic, and Sulfur is polyatomic.

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Which of the following is a diatomic molecule?

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