diff options
Diffstat (limited to 'Concepts_Of_Modern_Physics/Chapter_7.ipynb')
| -rwxr-xr-x | Concepts_Of_Modern_Physics/Chapter_7.ipynb | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/Concepts_Of_Modern_Physics/Chapter_7.ipynb b/Concepts_Of_Modern_Physics/Chapter_7.ipynb new file mode 100755 index 00000000..54659b71 --- /dev/null +++ b/Concepts_Of_Modern_Physics/Chapter_7.ipynb @@ -0,0 +1,184 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 7:Many electron Atoms"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.1,Page no:230"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Variable declaration \n",
+ "r= 5*(10**(-17)) #radius of spherical electron, m\n",
+ "Me= 9.1*(10**(-31)) #mass of electron, kg\n",
+ "h= 6.63*(10**(-34)) #Planck's constant, J.s\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "hbar= h/(2*(math.pi)) #reduced Planck's constant, J.s\n",
+ "v= (5*math.sqrt(3)/4)*(hbar/(Me*r)) #using Eqn 7.1, Page 230\n",
+ "c= 3*(10**8) #velocity of light, m/s\n",
+ "v= v/c #converting in terms of c, m/s\n",
+ "\n",
+ "#Result\n",
+ "print\"The velocity of electron in times of c is:%.3g\"%v,\"c\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The velocity of electron in times of c is:1.67e+04 c\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.2,Page no:241"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Variable declaration \n",
+ "n= 2 #outer (2s) orbit of lithium\n",
+ "E2= -5.39 #Ionisation energy of lithium, for n=2 eV\n",
+ "E1= -13.6 #for n=1, eV\n",
+ "\n",
+ "#Calculation\n",
+ "Z= n*(math.sqrt(E2/E1)) #modification factor for effective charge\n",
+ "e= 1.6*(10**(-19)) #charge of an electron, C\n",
+ "Ceffective = Z*e \n",
+ " \n",
+ "#Result \n",
+ "print\"The effective charge is: \",round(Ceffective/e,2),\"e or%.3g\"%Ceffective,\"C\"\n",
+ " \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The effective charge is: 1.26 e or2.01e-19 C\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.3,Page no:248"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Variable declaration \n",
+ "n= 2 #for 2p state\n",
+ "Ao= 5.29*(10**(-11)) #Bohr's orbit for n=1, m\n",
+ "r= (n**2)*Ao #orbital radius, m\n",
+ "f= 8.4*(10**14) #frequency of revolution, Hz ,using Eqn 4.4\n",
+ "\n",
+ "#Calculation\n",
+ "Mo= 4*(math.pi)*(10**(-7)) #Magnetic constant, T.m/A\n",
+ "e= 1.6*(10**(-19)) #charge of an electron, C\n",
+ "B= (Mo*f*e)/(2*r) #Magnetic field, T\n",
+ "Mb= 9.27*(10**(-24)) #Bohr Magneton, J/T\n",
+ "Um= Mb*B #Magnetic energy, J\n",
+ "Um= Um/e #converting to eV\n",
+ "\n",
+ "#Result\n",
+ "print\"The magnetic energy for electron is:%.2g\"%Um,\"eV\"\n",
+ "print\"\\nThe energy difference is twice this,which is:%.2g\"%(2*Um),\"eV\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The magnetic energy for electron is:2.3e-05 eV\n",
+ "\n",
+ "The energy difference is twice this,which is:4.6e-05 eV\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.8,Page no:257"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Variable declaration \n",
+ "l= 0.180 #wavelength, nm\n",
+ "l= l* 10**(-9) #converting to m\n",
+ "c= 3*(10**8) #velocity of light, m/s\n",
+ "\n",
+ "#Calculation\n",
+ "f= c/l #frequency, Hz\n",
+ "R= 1.097*(10**7) #Rydberg's constant, per m\n",
+ "Z= 1+(math.sqrt((4*f)/(3*c*R))) #using Eqn 7.21\n",
+ "\n",
+ "#Result\n",
+ "print\"The element has atomic number: \",round(Z)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The element has atomic number: 27.0\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file |