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//Example 5_12
clc();
clear;
//To determine the lattice constant
lamda=0.154 //units in nm
h=1
k=1
l=0
theta=20 //units in degrees
a=(lamda/2)*(sqrt(sqrt(h^2+k^2+l^2)/sin(theta*(%pi/180))^2)) //units in nm
printf("Lattice constant a=%.3fnm \n And the element is tungsten Since Tungsten has lattice constant of %.3fnm and crystallizes in bcc structure",a,a)
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