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clc//
//
//
//Variable declaration
mw=23+35.5; //molecular weight of NaCl(gm/mol)
N=6.023*10^23; //avagadro number(per mol)
d=2.18; //mass of unit volume
//Calculation
M=mw/N; //mass of NaCl molecule(gm)
n=2*d/M; //number of atoms per unit volume(atoms/cm^3)
a=(1/n)^(1/3); //distance between 2 adjacent atoms(cm)
//Result
printf("\n distance between 2 adjacent atoms is %e cm = %0.2f angstrom ",a,a*10^8)
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