Among halogens the highest boiling point is of___________________?
Correct answer: D. Iodine
- A. Flrorine
- B. Chlorine
- C. Bromine
- D. Iodine
Explanation
Boiling points of halogens increase from fluorine to iodine because their molecules become larger and more polarizable, so London dispersion forces become stronger. The likely mistake is choosing bromine, since it is a liquid at room temperature, but iodine has the strongest intermolecular forces and the highest boiling point.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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