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clc//
//
//
//Variable declaration
m=9.1*10^-31; //mass of electron(kg)
h=6.626*10^-34; //planck's constant
n1=1;
n2=2;
n3=3;
L=1*10^-10; //side(m)
//Calculation
E1=n1^2*h^2/(8*m*L^2); //lowest energy of electron(joule)
E2=n2^2*h^2/(8*m*L^2); //energy of electron in 1st state(joule)
E3=n3^2*h^2/(8*m*L^2); //energy of electron in 2nd state(joule)
//Result
printf("\n lowest energy of electron is %0.4f *10^-17 joule",E1*10^17)
printf("\n energy of electron in 1st state is %0.3f *10^-17 joule",E2*10^17)
printf("\n energy of electron in 2nd state is %0.3f *10^-17 joule",E3*10^17)
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