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17 April, 04:22

elect the correct answer. The elements beryllium, calcium, and strontium are all in group 2. What is the correct relationship of these elements regarding their ionization energy? A. Ca < Be < Sr B. Sr < Be < Ca C. Be < Ca < Sr D. Sr < Ca < Be E. Ca < Sr < Be

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  1. 17 April, 06:34
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    D. Sr < Ca < Be

    Step-by-step explanation:

    Ionization energy decreases from top to bottom within a Group, because the valence electrons are further from the nucleus and therefore easier to remove.

    Thus, Sr has the lowest ionization energy and Be the highest.

    The correct order is Sr < Ca < Be.
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