Question

The positions of the line in a powder pattern are governed by the values of which of the following____

(a) parabolic cell parameters

(b) circular cell parameters

(c) line position cell parameters

(d) unit cell parameters

I have been asked this question in my homework.

I'm obligated to ask this question of Survey of Techniques and their Applications to Solids topic in chapter Preparative Methods of Solid State Chemistry

Answer 1

The correct option is (d) unit cell parameters

The explanation: The positions (d- spacings) of the lines in a powder pattern are governed by the values of the unit cell parameters (a, b, c, α, β, ϒ). Unit cell lattice parameters are normally determined by single crystal methods but the values obtained are often accurate to only two or three significant figures.