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Chemistry - PERIODIC TABLE Question with Solution | TestHub

ChemistryPERIODIC TABLEAtomic Size, ZeffMedium2 minQB

ChemistryMediumsingle choice

Passage / Comprehension

Consider two closest $Cl_{2}$ molecules to find covalent and Vander Waals radii of Cl atom in chlorine molecule. The inner circles in figure correspond to the size of the chlorine atom.

What is the difference of vander wall radius and covalent radius of chlorine atom :

Options:

Answer:

Solution:

Covalent radius ( $r_{co v}$ ): Half of the internuclear distance between two bonded atoms in a Cl₂ molecule, calculated as $\frac{198 p m}{2} = 99 p m$ .

Van der Waals radius ( $r_{v d w}$ ): Half of the internuclear distance between two non-bonded adjacent atoms of neighboring molecules, calculated as $\frac{360 p m}{2} = 180 p m$ .

Difference: Subtracting the covalent radius from the Van der Waals radius gives $180 p m - 99 p m = 81 p m$ .

Stream:JEESubject:ChemistryTopic:PERIODIC TABLESubtopic:Atomic Size, Zeff

⏱ 2mℹ️ Source: QB

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