First slide

Water and Heavy water

Question

In heavy water molecule

Easy

A

Both hydrogen atoms and oxygen atoms are heavier isotopes
B

Hydrogen atoms are heavy hydrogens while oxygen atoms are lighter isotopes
C

Both hydrogen and oxygen atoms are lighter isotopes
D

None of these

Solution

$\large {D_2}{O^{16}} \approx {}^2{H_2}O\$
Deuterated water (or) Heavy water contains
Heavier isotope of Hydrogen [i.e..Deuterium]
& Lighter isotope of oxygen [ie..O¹⁶]

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