JEE CHEMISTRY MCQ: P-BLOCK ELEMENTS

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Ordinary oxygen contains:

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Correct option: C

\mathrm{A\;mixture\;of\;}{\mathrm{O}^{16}},\mathrm{\;}{\mathrm{O}^{17}}\mathrm{\;and\;}{\mathrm{O}^{18}}\mathrm{\;isotopes}

Option C is correct because ordinary oxygen exists as a mixture of isotopes O-16, O-17, and O-18.

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