Short Answer Type(a) M—F > M—Cl > M—Br > M—I.
(b) F2 > Cl2 > Br2 > I2.
because, as we move down the group: The atoms get larger. The outer shell gets further from the nucleus. The attraction between the nucleus and electrons gets weaker, so an electron is less easily gained.
Write the balanced chemical equation for the reaction of Cl2 with hot and concentrated NaOH. Is this reaction is redox reaction? Justify.
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