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diff --git a/Solid_state_physics/Chapter_1_1.ipynb b/Solid_state_physics/Chapter_1_1.ipynb deleted file mode 100755 index 32644890..00000000 --- a/Solid_state_physics/Chapter_1_1.ipynb +++ /dev/null @@ -1,200 +0,0 @@ -{ - "metadata": { - "name": "" - }, - "nbformat": 3, - "nbformat_minor": 0, - "worksheets": [ - { - "cells": [ - { - "cell_type": "heading", - "level": 1, - "metadata": {}, - "source": [ - "Chapter 1: Bonding in Solids" - ] - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 1.1, Page number 1.4" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\n", - "from math import pi\n", - "\n", - "#Variable declartion\n", - "E_a = 502 #first ionization energy of A(kJ/mol)\n", - "E_b = -335 #electron affinity for B atom(kJ/mol)\n", - "d = 3*10**-10 #inter-ionic seperation(m)\n", - "E = 8.85*10**-12 #permittivity of free space(C/N -m)\n", - "e = 1.602*10**-19#charge of an electron(C)\n", - "\n", - "#Calculations\n", - "C_e = (-e**2)/(4*pi*E*d) #Coulumbic attraction energy(J/ion pair)\n", - "C_e_kj = C_e *6.022*10**23*10**-3 #Converting C_e to KJ/mol\n", - "n_e = E_a + E_b + C_e_kj #Net change in energy per mole\n", - "\n", - "#Results\n", - "print \"Net change in energy is =\",round(n_e,3),\"kJ/mol\"\n", - "print \"As the net change in energy is negative, the molecule will be stable\"\n", - "print \"\\nThe solution differs because of rounding-off of the digits in the textbook\"" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Net change in energy is = -296.224 kJ/mol\n", - "As the net change in energy is negative, the molecule will be stable\n", - "\n", - "The solution differs because of rounding-off of the digits in the textbook\n" - ] - } - ], - "prompt_number": 19 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 1.2, Page number 1.4" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\n", - "from math import pi \n", - "\n", - "#Variable declaration\n", - "IP_K = 4.1 #ionization energy of K(eV)\n", - "EA_Cl = 3.6 #electron affinity of Cl(eV)\n", - "e = 1.602*10**-19 #charge of an electron(C)\n", - "Eo = 8.85*10**-12 #permittivity of free space(C/N -m)\n", - "\n", - "#Calcuations\n", - "del_E = IP_K - EA_Cl\n", - "#Ec = 0.5 = -e/4*pi*Eo*R\n", - "R = e/(4*pi*Eo*del_E)\n", - "\n", - "#Results\n", - "print \"(a) If their total energy is to be zero, then del_E = Ec\"\n", - "print \"(b) The seperation between the ion pair is\", round((R/1E-9),2), \"nm\"" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "(a) If their total energy is to be zero, then del_E = Ec\n", - "(b) The seperation between the ion pair is 2.88 nm\n" - ] - } - ], - "prompt_number": 7 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 1.3, Page number 1.5" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\n", - "from math import pi\n", - "\n", - "#Variable declaration\n", - "ro = 2.36*10**-10 #inter ionic equilibrium distance(m)\n", - "IP = 5.14 #ionization energy of Na(eV)\n", - "EA = 3.65 #electron affinity of Cl(eV)\n", - "e = 1.602*10**-19 #charge of an electron(C)\n", - "Eo = 8.85*10**-12 #permittivity of free space(C/N -m)\n", - "\n", - "#Calculations\n", - "Ue = (-e**2)/(4*pi*Eo*ro*e) #Potential energy in eV\n", - "Be = -Ue - IP + EA\n", - "\n", - "#Result\n", - "print \"Bond energy for NaCl molecule is\",round(Be,2),\"eV\"" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Bond energy for NaCl molecule is 4.61 eV\n" - ] - } - ], - "prompt_number": 9 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 1.4, Page number 1.18" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "\n", - "from math import pi\n", - "\n", - "#Variable declaration\n", - "ro = 0.281*10**-9 #equilibrium seperation between the ion pair(m)\n", - "IP = 5.14 #ionization energy of Na(eV)\n", - "EA = 3.61 #electron affinity of Cl(eV)\n", - "A = 1.748 #Madelung constant\n", - "n = 9. #born replusive exponent\n", - "e = 1.602*10**-19 #charge of an electron(C)\n", - "Eo = 8.85*10**-12 #permittivity of free space(C/N -m)\n", - "\n", - "#Calculations\n", - "Ce = (A*(e**2)*(1-(1/n)))/(4*pi*Eo*ro) #joules\n", - "Ce_ev = Ce/e #Converting joules to eV\n", - "\n", - "#Result\n", - "print \"The cohesive energy of NaCl molecule is\",round(Ce_ev,2),\"eV\"" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "The cohesive energy of NaCl molecule is 7.97 eV\n" - ] - } - ], - "prompt_number": 22 - } - ], - "metadata": {} - } - ] -}
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