Part B

If this is the first maximum for the X $-$rays of wavelength $0\mathrm{.}22$ nm $,$ what is the crystal plane separation of the protein that is responsible?

$0\mathrm{.}22$ nm

$0\mathrm{.}16$ nm

$0\mathrm{.}31$ nm

$0\mathrm{.}14$ nm