Which of the halogen can displace other three elements ?
Correct answer: A. Flourine
- A. Flourine
- B. Chlorine
- C. Iodine
- D. Bromine
Explanation
Fluorine is the strongest oxidizing halogen, so it can oxidize and displace chloride, bromide and iodide ions from their compounds. The oxidizing strength decreases down the group: F2 > Cl2 > Br2 > I2. Students may choose chlorine because chlorine is also reactive, but it cannot displace fluoride from fluorides.
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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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