Arrange the elements of group 17 and group 1 according to the given conditions.

(a) Increasing order of atomic size,

(b) Increasing non – metallic character

(c) Increasing ionization potential

(d) Increasing electron affinity

(e) Decreasing electro negativity.

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1 Answers

(a) Group 1: Lithium< Sodium< Potassium< Rubidium < Caesium< Francium

Group 17: Fluorine < Chlorine < Bromine< Iodine < Astatine

(b) Group 1: Francium

Group 17: Astatine< Iodine< Bromine< Chlorine< Fluorine

(c) Group 1: Francium< Cesium< Rubidium< Potassium< Sodium< Lithium

Group 17: Astatine< Iodine< Bromine< Chlorine< Fluorine

(d) Group 1: Francium

Group 17: Astatine

(e) Group 1: Lithium>Sodium> Potassium> Rubidium> Cesium> Francium

Group 17: Fluorine > Chlorine> Bromine > Iodine > Astatine

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