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Why is it that in Group 1 elements become more reactive as we go down the group but in Group 7 elements become less reactive as we go down the group?

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Braincellswanted

Answer:

Group 1 elements become more reactive as we move down the group. These atoms are larger because they have more shells. ... The force of attraction between the nucleus and the electron is less than for smaller atoms, and the outer electron is lost more easily.

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