Question

Accurate cell parameters can be obtained from a least squares refinement of the _______________

(a) S-spacings

(b) Vacant p shells

(c) d-spacings

(d) vacant f shells

This question was posed to me by my college professor while I was bunking the class.

The doubt is from Effect of Stress on a Powder Pattern in chapter X-Ray Diffraction of Solid State Chemistry

Answer 1

Right choice is (c) d-spacings

For explanation: Accurate cell parameters may be obtained from a least squares refinement on the d-spacings of at least several high angle powder lines whose indexing is known for certain.