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Solution: Potassium metal crystallizes in a body-centered cubic struct...

Question

Potassium metal crystallizes in a body-centered cubic structure with a unit cell edge length of 5.31 angstroms. The radius of a potassium atom is __________ angstroms.

A. 2.30       

B. 2.66        

C. 5.31        

D. 1.33         

E. 1.88