CRITICAL SIZE: The actual size of material which allows the escape of neutrons to such an extent that at least one neutron is positively left behind per fission reaction is known as critical size. CRITICAL MASS: The mass corresponding to the critical size per fission reaction ...

A chain reaction is also called nuclear fission chain reaction. A chain reaction is a reaction which is a combination of continuous nuclear fission reactions because the nuclear reaction resulting from the capture of a neutron is accompanied by emission of one or more neutrons. ...

The process of breaking up the heavier nucleus into two or more smaller nucleus having approx. same mass is called nuclear fission. There exists a mass defect during nuclear fission process. The total mass of products of fission is always less than the reactants of ...

The energy released in the formation of a nucleus from its constituent nucleons is called the binding energy of the nucleus. This is the energy which is required to break up the nucleus into its constituent nucleons. The mean binding energy per nucleon is the ...

The difference between sum of masses of protons, neutrons, electrons and actual isotopic mass of an element is called mass defect. This mass defect occurs due to the transformation of some mass into enegy. The transformation follows the Einstein mass energy equivalence equation. E = mc2

The ratio of mass per unit volume is called density. The ratio of mass per unit volume inside the nucleus is called nuclear density. As we know, the nucleus is spherical in shape so its volume must be very small as its radius is of ...

Atomic mass unit is also referred as a.m.u . It is defined as the mass which is exactly 1/12th of the mass of a 6C12 atom. Thus, 1 a.m.u = 1/12th of mass of 6C12 = (1/12)*12g mol-1 /NA = 1g mol -1 / (6.022*1023mol-1) = 1.66*10-23g

It is a new fundamental particle which oscillates back and forth in between closed nucleons with a velocity which is comparable to the velocity of light. This particle is detected by various radiation experiments. These particles can be positively, negatively charged or can be electrically ...