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Q.

Water (H2O) is formed by the reaction of hydrogen (11H) with all isotopes of Oxygen i.e  16O, 17O and  18O.  In which case the percentage of hydrogen (H) is maximum in water.                       

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a

 16O

b

 18O

c

All

d

 17O

answer is A.

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Detailed Solution

               H216O                H217O                H218OP.C of H in H216O=218×100P.C of H in H217O = 219×100P.C of H in H219O =221×100=11.11%=10.52%=9.52%   

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