Solid StateHard

Question

Sodium metal crystallizes in a body centred cubic lattice with a unit cell edge of 4.29(Ao). The radius of sodium atom is approximately :-

Options

A.5.72(Ao)
B.0.93(Ao)
C.1.86(Ao)
D.3.022(Ao)

Solution

For BCC, √3 × a = 4R
∴ R = = 1.86 (Ao)

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