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Z=2;
E2=-(13.6)*(Z^2)/4;
b=(-E2);
printf('\n The Kinetic energy of the electron is %f',b);
m0=(9.1)*(10^-31)*(1.6)*(10^-19);
p=sqrt(2*b*m0);
h=(6.6);
disp("λ=(h)/(p)");
c=h/p;  //say c=λ
d=c*(10^-25);
printf('\n The value of de-Broglie wavelength is %fnm',d);