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Analytical Instrumentation

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In mass spectroscopy of water (H2O) peak corresponding to which mass is not possible?

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A
15
💡 Explanation:

This answer is correct as when H2O is ionised by the bombardment of electron beam it can get converted to H+, O+, [OH]+, [H2O] having masses 1, 16, 17 and 18 respectively. But none of these configurations give mass of 15. Hence, there can be no peak corresponding to  mass 15.

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