1 files changed, 12 insertions, 0 deletions
diff --git a/3717/CH7/EX7.13/Ex7_13.sce b/3717/CH7/EX7.13/Ex7_13.sce
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index 000000000..eda812b4b
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+// Ex7_13 Page:141 (2014)
+clc;clear;
+Z = 11;    // Atomic number of sodium
+h = 6.626e-034;    // Planck's constant, Js
+e = 1.6e-019;    // Energy conversion factor, J/eV
+c = 3e+08;    // Speed of light in vacuum, m/s
+R_inf = 1.097e+07;    // Rydberg constant, per metre
+E_K_alpha = (3*h*c*R_inf*(Z - 1)^2)/(4*e*1e+03);    // The energy of the K_alpha X-ray of sodium, keV
+printf("\nThe energy of the K_alpha X-ray of sodium = %4.2f keV", E_K_alpha);
+
+// Result
+// The energy of the K_alpha X-ray of sodium = 1.02 keV 
+\ No newline at end of file