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diff --git a/1694/CH1/EX1.10/EX1_10.sce b/1694/CH1/EX1.10/EX1_10.sce
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+clear;
+clc;
+printf("\nEx1.10\n");
+//page no.-12
+//given
+r=1.278;..........//atomic radius of Cu
+n=4;..............//molecules per unit cell for F.C.C.
+N=6.023*10^23;...//avagadro no.
+m=63.5;..........//atomic wt. of Cu
+
+M=(n*m)/N...........//mass of unit cell
+
+a=(4*r*10^-8)/sqrt(2).....//lattice constant in cm
+
+rho=M/a^3............//density of Cu in gm/c.c.
+
+printf("\ndensity of Cu crystal is 8.9 gm/c.c.\n");