Nuclear Reactions

Nuclear Reactions:

The reactions in which nuclei of atoms are involved resulting in the formation of new nuclei are known as Nuclear reactions. When a nucleon (incident particle) comes in contact with another nucleus (target nucleus), the latter changes into a new nucleus and this process is known as a Nuclear reaction. These reactions are expressed in the form of chemical equations as under-

  • The reactants are written on the L.H.S while products on R.H.S having an arrow in between.
  • The mass number (atomic mass) of the element is written as superscript while the atomic number is expressed as a subscript on the symbol of the element say A as Atomic NumberAAtomic Mass. For Example- 92U238 represents the atom of U having atomic mass 238 and atomic number 92.
  • Atomic Mass and Atomic Number must be balanced on both sides of Nuclear reaction.
  • The symbols used for various projectiles used in Nuclear reactions are as- proton (1H1), electron or β-particle (-1e0), Neutron (0n1), α-particle (2He4), deutron (1H2 or 1D2) etc. A nucleon is a nuclear particle.

Nuclear reactions are usually represented by the following notations and sequence-

Reactant Nucleus (Bombarding Particle, Particle Emitted) Product Nucleus. For Example- the nuclear reaction 13Al27 (α, p) 14Si30 mean Al-27 is a target, α-particle is a projectile, a proton is an emitting particle and Si-30 is the product and is represented as-

13Al27 + 2He4 ————–> 14Si30 + 1H1

Other Examples are-

7N14 + 2He4 ————–> 8O17 + 1H1 i.e. 7N14 (α, P) 8O17
8O16 + 0n1 ————–> 6C13 + 2He4 i.e. 8O16 (n, α) 6C13
4Be9 + 2He4 ————–> 6C12 + 0n1 i.e. 4Be9 (α, n) 6C12
4Be9 + 1H1 ————–> 3Li6 + 2He4 i.e. 4Be9 (P, α) 3Li6

Nuclear Fission and Nuclear FusionHuman Genome Project
Group Displacement LawChromosomal Theory Of Inheritance
Nature of Radioactive RaysDarwinism or Theory of Natural Selection
Electrical Properties of Colloidal SolsTheories of Evolution: From Tamil Board Book

Leave a Reply

%d bloggers like this: