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//To Calculate the Energy needed to remove the electron from the ion
//Example 43.3
clear;
clc;
E1=40.8;//Excitation Energy of Hydroen like ion inits first excited state in eV
K=13.6;//Value of constant Rhc = 13.6 eV
n1=1;//n=1 for the first orbit
n2=2;//n=2 for the second orbit
Z=sqrt(E1/(K*((1/n1^2)-(1/n2^2))));//Atomic Number of Hydrogen like ion
E=-K*Z^2;//Energy needed to remove the electron from the ion in eV
printf("Energy required to remove the electron from the ion = %.1f eV",E);
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