Which of the following properties of \( {D}_2{O} \) is less when compared to \( {H}_2{O} \)?
Show Hint
- Melting point
- Dielectric constant
- Enthalpy of vaporization
- Viscosity
The Correct Option is B
Solution and Explanation
Deuterium oxide (\( {D}_2{O} \)) has a higher molecular mass compared to normal water (\( {H}_2{O} \)), which leads to slightly different physical properties. While the properties like melting point, enthalpy of vaporization, and viscosity are relatively similar, the dielectric constant of \( {D}_2{O} \) is less than that of \( {H}_2{O} \). This is because the increased mass of deuterium affects the polarizability and the ability to stabilize charges, leading to a lower dielectric constant.
Final Answer: Dielectric constant.
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