An ordinary oxygen contains [NCERT 1977]

1.	An ordinary oxygen contains [NCERT 1977]
A.	Only \[O-16\] isotopes
B.	Only \[O-17\] isotopes
C.	A mixture of \[O-16\] and \[O-18\] isotopes
D.	A mixture of O ? 16, \[O-17\] and \[O-18\] isotopes
Answer» E.

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An ordinary oxygen contains [NCERT 1977]

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