The second-order diffraction for a gold crystal is at an angle of 22.20o for x-rays of 154 pm. what is the spacing between the crystal planes?

The spacing between the crystal planes is

Explanation:

To calculate the spacing between the crystal planes, we use the equation given by Bragg, which is:

where,

n = order of diffraction = 2

= wavelength of the light =     (Conversion factor:   )

d = spacing between the crystal planes = ?

= angle of diffraction = 22.20°

Putting values in above equation, we get:

Hence, the spacing between the crystal planes is

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