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Q.

Inter nuclear distance between adjacent sodium atoms in crystalline sodium is 360 pm. Covalent radius of sodium will be

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a

< 360 pm

b

360 pm

c

180 pm

d

< 180 pm

answer is A.

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Detailed Solution

In metals….Atomic radius = Metallic radius= 360/2 = 180 pm ;

Magnitude of covalent radius < metallic radius ; 

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