Question:
Which one of the following elements will remain as liquid inside pure boiling water?
Which one of the following elements will remain as liquid inside pure boiling water?
Updated On: Feb 6, 2026
Li
Ga
Cs
Br
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The Correct Option is B
Solution and Explanation
Element State at Boiling Water Temperature Analysis
Boiling water has a temperature of \( 100^\circ\text{C} \). We need to find an element that has a melting point below \( 100^\circ\text{C} \) and a boiling point above \( 100^\circ\text{C} \) to remain liquid at this temperature.
- \( \text{Li} \) and \( \text{Cs} \): Alkali metals (Li and Cs) react vigorously with water.
- \( \text{Br}_2 \): Bromine (\( \text{Br}_2 \)) has a boiling point of \( 58.8^\circ\text{C} \), so it would be a gas at \( 100^\circ\text{C} \).
- \( \text{Ga} \): Gallium (\( \text{Ga} \)) has a melting point of \( 29.8^\circ\text{C} \) and a boiling point of \( 2400^\circ\text{C} \). Thus, gallium will remain liquid inside boiling water.
Conclusion:
Gallium will remain liquid inside boiling water.
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