The largest x-ray wavelength that can be diffracted by crystal planes with a separation of 0.316 nm is:
A)0.158 nm
B)0.316 nm
C)0.474 nm
D)0.632 nm
E)1.26 nm

Question

Quizplus · Accepted Answer

The largest wavelength that can be diffracted by a crystal is twice the plane separation, according to Bragg's law (nλ = 2d sin θ). For maximum wavelength, sin θ = 1, so λ = 2d = 2 * 0.316 nm = 0.632 nm.

The Largest X-Ray Wavelength That Can Be Diffracted by Crystal