6 files changed, 48 insertions, 0 deletions
diff --git a/446/CH11/EX11.1/11_1.sce b/446/CH11/EX11.1/11_1.sce
new file mode 100755
index 000000000..6a1c1c115
--- /dev/null
+++ b/446/CH11/EX11.1/11_1.sce
@@ -0,0 +1,10 @@
+clear
+clc
+disp('Exa-11.1(a)');
+c=769*10^3; Na=6.023*10^23; JeV=1.6*10^-19; //various constants and given values
+Be=c/(Na*JeV);        //Binding energy of an ion pair in the lattice
+printf('The experimental value was found out to be %.4f eV.\n',Be);
+disp('Exa-11.1(b)');
+n=9;a=1.7476; R=0.281; k= 1.44;     //Given values and consstants
+Bc=k*a*(1-(1/n))/R;                  //ionic binding energy eperimentally
+printf('The calculated value of the binding energy is %.4f eV.',Bc);
diff --git a/446/CH11/EX11.1/11_1.txt b/446/CH11/EX11.1/11_1.txt
new file mode 100755
index 000000000..4493a8ef9
--- /dev/null
+++ b/446/CH11/EX11.1/11_1.txt
@@ -0,0 +1,6 @@
+  
+ Exa-11.1(a)   
+The experimental value was found out to be 7.9798 eV.
+ 
+ Exa-11.1(b)   
+The calculated value of the binding energy is 7.9606 eV. 
+\ No newline at end of file
diff --git a/446/CH11/EX11.2/11_2.sce b/446/CH11/EX11.2/11_2.sce
new file mode 100755
index 000000000..9e31a50c2
--- /dev/null
+++ b/446/CH11/EX11.2/11_2.sce
@@ -0,0 +1,8 @@
+clear
+clc
+disp('Exa-11.2');
+a=3.61;// amount of energy required to remove an electron from Cl- ion
+b=-5.14 //amount of energy returned when an electron is added to Na+ ion\
+c=7.98 //binding energy of NaCl atom
+E=a+b+c  //suom of all the energies
+printf('The net energy to be supplied is %.3f eV',E);
+\ No newline at end of file
diff --git a/446/CH11/EX11.2/11_2.txt b/446/CH11/EX11.2/11_2.txt
new file mode 100755
index 000000000..3e1801da7
--- /dev/null
+++ b/446/CH11/EX11.2/11_2.txt
@@ -0,0 +1,3 @@
+  
+ Exa-11.2   
+The net energy to be supplied is 6.450 eV 
+\ No newline at end of file
diff --git a/446/CH11/EX11.3/11_3.sce b/446/CH11/EX11.3/11_3.sce
new file mode 100755
index 000000000..82558e27b
--- /dev/null
+++ b/446/CH11/EX11.3/11_3.sce
@@ -0,0 +1,14 @@
+clear
+clc
+disp('Ex-11.3(a)');
+Na=6.023*10^23; p=8.96*10^3; M=63.5*10^-3;   //Na=avagadro's number,p=density,M=molar mass
+n= p*Na/M;                                   //density of charge carriers
+printf('The density of charge carriers in copper is %e atoms/m3\n',n);
+s=5.88*10^7;m=9.11*10^-31;e=1.6*10^-19;    //charge & mass of an electron,resistance per unit length
+t= s*m/(n*e^2);                            //average time between collisions
+printf('The average time between collisions of conducting electrons is %e sec.\n',t);
+disp('Ex-11.3(b)');
+Ef=7.03*1.6*10^-19;           //converting given enrgy to J
+Vf=sqrt(2*Ef/m);               //fermi velocity
+l=Vf*t;                      //mean free path
+printf('The average mean free path is %e m = %.1f nm',l,l*10^9);
diff --git a/446/CH11/EX11.3/11_3.txt b/446/CH11/EX11.3/11_3.txt
new file mode 100755
index 000000000..f7acc3afe
--- /dev/null
+++ b/446/CH11/EX11.3/11_3.txt
@@ -0,0 +1,7 @@
+  
+ Ex-11.3(a)   
+The density of charge carriers in copper is 8.498595e+028 atoms/m3
+The average time between collisions of conducting electrons is 2.462116e-014 sec.
+ 
+ Ex-11.3(b)   
+The average mean free path is 3.869030e-008 m = 38.7 nm 
+\ No newline at end of file