The metallic radius of sodium is $1.86\,\,\mathop {\rm{A}}\limits^{\rm{o}} ,$ where as its cation radius from its vapour state is

$1.54\,\,\mathop {\rm{A}}\limits^{\rm{o}} $

$1.86\,\,\mathop {\rm{A}}\limits^{\rm{o}} $

$1.94\,\,\mathop {\rm{A}}\limits^{\rm{o}} $

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NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The metallic radius of sodium is

1.86\,\,\mathop \mathrm{A}\limits^\mathrm{o} ,

where as its cation radius from its vapour state is

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Correct option: C

1.54\,\,\mathop \mathrm{A}\limits^\mathrm{o}

Option C is correct because the cation radius is smaller than the metallic radius due to increased effective nuclear charge and removal of an electron.

NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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