KVPY SX SB Exam 2012 Question Paper

Question : 106 of 120

Marks: +1, -0

The inter-planar spacing between the (2 2 1) planes of a cubic lattice of length 450 pm is

Solution:

d_\hkl=a/√{h^2+k^2+l^2}

=450/√{4+4+1}=450/√9

= 150pm

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