The atomic planes in a graphite crystal are separated by 335 pm.At what angle would you find the first-order (n = 1)diffraction of 0.154 nm X-rays from a graphite crystal?
A)0.232°
B)2.63°
C)13.3°
D)27.4°
E)66.8°

Question

Quizplus · Accepted Answer

Using Bragg's Law, nλ = 2d sin θ, where n = 1, λ = 0.154 nm, and d = 335 pm (0.335 nm), we solve for θ to find the angle for first-order diffraction. This calculation gives θ ≈ 13.3°.

The Atomic Planes in a Graphite Crystal Are Separated by 335