How does the reactivity change across the period and down the group in a modern periodic table ?
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Explanation:
metallic characters decreases along the period and decreases down the group
Non-metallic character increases along the period and increases down the group
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Metallic character refers to the level of reactivity of a metal.
Non-metallic character relates to the tendency to accept electrons during chemical reactions.
Metallic tendency increases going down a group.
Non-metallic tendency increases going from left to right across the periodic table.
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