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diff --git a/1427/CH20/EX20.8/20_8.sce b/1427/CH20/EX20.8/20_8.sce
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+++ b/1427/CH20/EX20.8/20_8.sce
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+//ques-20.8
+//Calculating binding energy per nucleon of Ca
+clc
+M=39.975;//atomic mass of Ca (in amu)
+mp=1.0078;//mass of proton (in amu)
+mn=1.0086;//mass of neutron (in amu)
+dm=20*mp+20*mn-M;
+BE=(dm*931)/40;
+printf("The binding energy per nucleon for Ca is %.3f Mev.",BE);