The spacing between layers of Ni atoms is 1.76 X 10⁻¹⁰
Waves spreading outward around obstructions are known as diffraction. Sound, electromagnetic radiation like light, X-rays, and gamma rays, as well as very small moving particles like atoms, neutrons, and electrons that exhibit wavelike qualities all exhibit diffraction. When the wavelength of the radiation is comparable to the linear dimensions of the obstruction, the interference phenomenon—which occurs when waves are overlaid and may either reinforce or cancel each other out—is most prominent.
According to the question:
n = order of diffraction
d = distance between layers
λ = wavelength of the X-ray used
Θ = angle of incoming light
Calculate the distance using Bragg's equation:
nλ = 2dsinΘ
hence, d = 1.76 X 10⁻¹⁰
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