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diff --git a/1871/CH7/EX7.1/Ch07Ex1.sce b/1871/CH7/EX7.1/Ch07Ex1.sce
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+// Scilab code Ex7.1: Pg:275 (2008)
+clc;clear;
+M_He = 4.001265;    // Mass of helium nucleus, amu
+M_P = 1.007277;    // Mass of proton, amu
+M_N = 1.008666;    // Mass of neutron, amu
+amu = 931.4812;    // One amu
+M = 2*M_P+2*M_N;    // Total initial mass of two protons and two neutrons, amu
+delta_m = M-M_He;    // Mass defect, amu
+BE = delta_m * amu;    // Binding energy of alpha particle, MeV
+printf("\nThe binding energy of an alpha particle = %7.4f Mev", BE);
+printf("\nThe binding energy per nucleon = %8.6f Mev", BE/4);
+
+// Result 
+// The binding energy of an alpha particle = 28.5229 Mev
+// The binding energy per nucleon = 7.130721 Mev 
+\ No newline at end of file