1 files changed, 16 insertions, 0 deletions
diff --git a/1694/CH1/EX1.21/EX1_21.sce b/1694/CH1/EX1.21/EX1_21.sce
new file mode 100644
index 000000000..59d6c5457
--- /dev/null
+++ b/1694/CH1/EX1.21/EX1_21.sce
@@ -0,0 +1,16 @@
+clear;
+clc;
+printf("\nEx1.21\n");
+//page no.-33
+//given
+n=4;...........//no. of atoms per unit cell
+M=63.5;........//atomic wt. of Ge
+N=6.02*10^26;....//avagadro no.
+rho=7860;........//density in Kg/m^3
+r=0.1278*10^-9;....//atomic radius
+
+a=8^(0.5)*r;.......//lattice constant in m
+
+rho=(n*M)/(N*a^3)......//density in Kg/m^3
+
+printf("\ndensity is 8938.66 Kg/m^3\n");