Question

why reactivity first decrese then increase while moving along a period ​

Answer 1

Answer:

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Answer 2

Answer:

Along a period, the alkali metals and halogens are the most reactive. ... Thus, as we move along a period the tendency to lose electron decreases for the metals and tendency to gain electron increases for the non-metals. Consequently, the reactivity first decreases then increases.

Explanation:

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