NEET Chemistry The Solid State Questions Solved


A rhombohedral unit cell is shown. What is its volume ?
Side length = a Å.

(A) a33                               

(B) a332

(C) a32                             

(D) a3 32

(C). The volume is a.b×c. Take a=a.i

Now b=acosθi+asinθj=a2i+a32j

c=a2i+a23j+a23k

 a.b×c

a00a2a320a2a23a23=a3×32×23=a32

Difficulty Level:

  • 15%
  • 38%
  • 31%
  • 17%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 25, 2019)