The Atomic Nucleus Notes by Sir Waqar Hussain

Important Easy Notes of Physics of Chapter No. 19: The Atomic Nucleus written by Professor Mr. Waqar Hussain Suib. These notes are very helpful in the preparation of Physics for students of the 12th class and these are according to the paper patterns of all Sindh Book Boards.

Summary and Contents:
Topics which are discussed in the notes are given below:
  • What is Nuclear Structure
  • Definition of Mass Number with its Notation
  • Definition of Atomic Number with its Notation
  • Definition of Neutron Number with its Notation
  • Definition of Representation of an Element with its Notation
  • Definition of Isotopes with example
  • Define and Explain Radioactivity and Radioactive Decay
  • Define the Alpha Decay(𝜶 − 𝑫𝒆𝒄𝒂𝒚) 
  • Define the Beta Decay (𝜷 − 𝑫𝒆𝒄𝒂𝒚)
  • Define the +𝜷 − 𝒅𝒆𝒄𝒂𝒚 (Positron Emission)
  • Define the −𝜷 − 𝒅𝒆𝒄𝒂𝒚 (Electron Emission)
  • Define the Gamma Decay(𝜸 − 𝒅𝒆𝒄𝒂𝒚)
  • State and Explain Law of Radioactive Decay with Mathematical Expression and Exponential form, Graphical Representation and Half Life of Element.
  • Mass Defect, Binding Energy and Packing Fraction.
  • Definition of Mass Defect with Mathematically.
  • Definition of Binding Energy with Mathematically.
  • Definition of Packing Fraction with Mathematically.
  • Definition of Nuclear Reactions
  • State  HELIUM INDUCED REACTION with example
  • State  PROTON INDUCED REACTION with example
  • State  DEUTERON INDUCED REACTION with example
  • State  GAMMA INDUCED REACTION with example
  • Define and Explain Nuclear Fission with its Liquid Drop Model
  • Explain Chain Reaction with its Types (i) Controlled Fission Chain Reaction (ii) Uncontrolled Fission Chain Reaction
  • State Controlled Fission Chain Reaction
  • State Uncontrolled Fission Chain Reaction
  • Define and Explain NUCLEAR FUSION.
  • Find the binding energy of 52Te126 in MeV if the mass of a proton = 1.0078U, mass of a neutron = 1.0086U, mass of a Te atoms = 125.9033U.
  • Find the binding energy of 52Te126 in MeV if the mass of a proton is 1.0078U, mass of a neutron is 1.0086U, mass of a Te atoms = 125.9033U.
  • The half-period of 104Po210 is 140 days. By what percent does its activity decrease per week? 
  • Calculate the binding energy of hydrogen atom. Given that: m = 9.1 x 10–31Kg e = 1.6 x 10–19Coul Єo = 8.854 x 10–12Coul2 /Nm2
  • If the number of atoms per gram of 88Ra236 is 2.666 x 1021 and it decays with a half-life of 1622 years, find the decay constant and the activity of the sample.
  • A deuteron (3.3431 x 10–27 kg) is formed when a proton (1.6724 x 10–27 kg) and a neutron (1.6748 x 10–27) combine; calculate the mass defect and binding energy (in MeV).
  • Find the binding energy of 52Te126 in MeV if the mass of a proton is 1.0078U, mass of a neutron is 1.0086U, mass of a Te atoms = 125.9033U.
  • The number of atoms per gram of 88Ra226is 2.666x1021 and it decays with a half-life of 1622 years. Find the activity and decay constant of the sample.
  • Find the binding energy of 52Te126 in MeV if the mass of a proton is 1.0078U, mass of a neutron is 1.0086U, mass of a Te atoms = 125.9033U.
  • Find the binding energy and packing fraction (B.E per nucleon) of 52Te126 . Given that: mp=1.0078U mn=1.0086U mTe=125.9033U 1U=931.5MeV.

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