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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);