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//Example 4_7
clc();
clear;
//To calculate the lattice constant
M=6.94 //units in a.m.u
density=530 //units in kg/m^3
n=2
N=6.02*10^26 //units in kg/mol
a=((n*M)/(density*N))^(1/3)*10^10
printf("lattice constant is %.3f angstrom",a)
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