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Sodium metal crystallises in body centre...

Sodium metal crystallises in body centred cubic lattic with cell edge `5.20Å` .What is the radius of sodium atom ?

Text Solution

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The correct Answer is:
1.86Å

In a body centred cube,
Radius of Na atom `=(sqrt3a)/(4)=(sqrt3xx(4.29Å))/(4)=(1.732xx(4.29Å))/(4)=1.86Å`
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