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clc;
clear;
//Consider the peak value 8 of observation for calculation in the sum
lambda=0.07107 //wavelength in nm
theta=29.71 //angle in degree
h=4 //x intercept of parallel plane
k=0 //y intercept of parallel plane
l=0 //z intercept of parallel plane
//calculation
d_400=(lambda/(2*sind(theta))) //interplanar distance in nm
alpha=d_400*(sqrt(h^2+k^2+l^2))
mprintf("The crystal structure is bcc due to corresponding (hkl) values\n")
mprintf("lattice constant of peak no.1 is (%d%d%d)\n",h,k,l)
mprintf("The element is tungsten since this lattice constant of %0.4f nm and crystallizes in the bcc structure",alpha) //The answer provided in the textbook is wrong
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