Name the element in each group which has the highest value listed
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Explanation:
Thallium has the most metallic character since metallic character increases down the group
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Answer:
energy and Fluorine is said to have the highest ionization energy. First ionization energy varies in a predictable way across the periodic table. The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus helium has the highest first ionization energy , and francium has one of the lowest.
It is because of the shielding effect that the ionization energy decreases from top to bottom within a group.
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