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Problem: You may want to reference (Pages 263 - 267) Section 7.3 while completing this problem.With the exception of helium, the noble gases condense to form solids when they are cooled sufficiently. At temperatures below 83 K, argon forms a close-packed solid whose structure is shown below.What is the apparent radius of an argon atom in solid argon, assuming the atoms touch as shown in this figure? Is this value larger or smaller than the bonding atomic radius estimated for argon in the figure shown below?

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Recall that the face-centered cubic lattice contains an atom in each of the face of the cube and an atom in each of the corners. It looks like this:


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You may want to reference (Pages 263 - 267) Section 7.3 while completing this problem.

With the exception of helium, the noble gases condense to form solids when they are cooled sufficiently. At temperatures below 83 K, argon forms a close-packed solid whose structure is shown below.
A diagram shows a solid structure with atoms in rows offset from one another.  The distance between atoms in the same row is 5.26 angstroms, while the distance between atoms in adjacent rows is 3.72 angstroms.
What is the apparent radius of an argon atom in solid argon, assuming the atoms touch as shown in this figure? Is this value larger or smaller than the bonding atomic radius estimated for argon in the figure shown below?
The chart shows values of the bonding atomic radius for elements of the periodic table. According to the chart, the value of the bonding atomic radius for Ar is 1.06 angstroms.


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