Nuclear Fusion: The process in which two light nuclei combine(at extremely high temperature) to form a single heavier nucleus is called nuclear fusion. For Fusion to take place, the two nuclei must come close enough so that attractive short range nuclear force is unable to affect them. Since both the nuclei are positively charged particles,

Half-Life of Decay: It is defined as the time after which number of atom left will become half of initial number of atom, Then from equation Average Life: It is defined as the total life time of all the atoms of the element and dividing it by the total number of atoms present initially in

Radioactive Displacement Laws: This Law describes which chemical element and isotope are created during the particular type of radioactive decay. α-Decay:  α-Decay is a process in which and unstable nucleus transforms itself into a new nucleus by  emitting and α particle (A Helium nucleus ₂He⁴). Since an α  particle has two protons and two neutrons, so after an α-Decay,

Radioactivity: A French physicist H Bequerel discovered radioactivity in 1896 by accident. Radioactivity is spontaneous nuclear phenomenon in which an unstable nucleus undergoes a decay with the emission of same(α,β) and electromagnetic radiations (γ) rays. In nature, three types of radioactive decay occurs which are as- α-Decay: In α decay, a helium nucleus ₂He⁴ is emitted. β-Decay: