Question

Sodium metal crystallizes in a body centred cubic lattice with a unit cell edge of 4.29 . The radius of sodium atom is approximately ___.

(A) 1.86

(B) 3.22

(C) 5.72

(D) 0.93

Answer 1

Correct option: (A) 1.86

Explanation:

Radius of Na (in bcc lattice)

= 1.857 ≈ 1.86