Which of the following statements is not correct?
Correct answer: A. Among halogens, oxidizing behavior increases down the group
- A. Among halogens, oxidizing behavior increases down the group
- B. Among alkali metals, reducing character increases down the group
- C. Fluorine is the most electronegative element
- D. Lithium is the hardest metal among alkali metals.
Explanation
The correct answer is Option A. In the halogen group, oxidizing behavior decreases down the group because the elements become less effective at accepting electrons due to increased atomic size and lower electronegativity. Option B is correct as reducing character increases down the alkali metal group due to larger atomic size and easier electron loss. Option C is correct; fluorine's high electronegativity is well-known. Option D is also correct; lithium is indeed the hardest of the alkali metals.
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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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