InterviewSolution
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InterviewSolution
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How does the chemical reactivity of:(a) alkali metals vary?(b) halogens vary? |
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Answer» (a) Since, the distance of the valence electrons from the nucleus keeps on increasing down the group, therefore, the ionization energy keeps on decreasing. Hence the reactivity of alkali metals increases from lithium to francium. (b) As we move down a group, the size keeps on increasing, so it becomes more difficult for atoms to attract electrons. Thus reactivity of halogens decreases from Fluorine to Astatine. |
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