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//Variable declaration
ne=1; //number of electrons
M=107.9; //atomic weight
D=10500; //density(kg/m**3)
Na=6.025*10**26; //avagadro number(per k mol)
m=9.11*10**-31; //mass(kg)
h=6.63*10**-34; //planck's constant
//Calculation
n=ne*Na*D/M;
x=h**2/(8*m);
y=(3/%pi)**(2/3);
Ef=x*y*n**(2/3); //fermi energy(eV)
//Result
printf('fermi energy is %0.3f *10**-19 J \n',(Ef*10**19))
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