Smallest atom in Group 7A has to be determined. Concept Introduction: Atomic radius is the distance between the atomic nucleus and outermost shell having electrons of an atom. From the atomic radius, the size of atoms can be visualized Along the period, the valence electron is added to the same shell and thus attraction by the nucleus gets stronger. Therefore, atomic radii reduces from left to right in the periodic table Group 7A in the periodic table contains 7 valence electrons and the outer electronic configuration is ns 2 np 5 .

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Chapter 8, Problem 8.40QP

Interpretation Introduction

Interpretation: Smallest atom in Group 7A has to be determined.

Concept Introduction:

Atomic radius is the distance between the atomic nucleus and outermost shell having electrons of an atom. From the atomic radius, the size of atoms can be visualized

Along the period, the valence electron is added to the same shell and thus attraction by the nucleus gets stronger. Therefore, atomic radii reduces from left to right in the periodic table

Group 7A in the periodic table contains 7 valence electrons and the outer electronic configuration is ns2np5.

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