uses of isotopes

The unit in which atomic and nuclear masses are measured is called atomic mass unit (a.m.u). 1 a.m.u is defined as 1/12 t h of the mass of an atom of 6 C 1 2 isotope. It can be shown that 1 a.m.u = 1.66 x 10 2 7 kg. According to Einstein, mass energy equivalence E = mc 2 Where m = 1.66 x ..

Hydrogen is the most abundant element in the universe. Hydrogen is also the lightest element in the universe. It has a vapour density of 1, which is 14.4 times lighter than air. Hydrogen is absent in the free state in the earth's atmosphere. But in the combined state it is found in water, a..

.e., the equilibrium position) no movement of children on the see-saw occurs. Static Equilibrium In the case of reversible reaction, however a static equilibrium is not being established. In the case of ammonia, using deuterium, D (an isotope of hydrogen) it has been proved that..

The process of splitting of a heavy nucleus into a number of light nuclei with the liberation of tremendous amount of energy and two or three neutrons is called nuclear fission. In the fissioning of the Uranium-235 isotope, some mass of Uranium disappears (or is lost) and this small m..

. This difference in mass appears as energy given by [c is the velocity of light] The Uranium - 236 can fission to give isotopes of Barium-144, Krypton - 90 and two neutrons. Nuclear Fission Uranium - 236 can also divide to produce other products. Fission in uranium atoms may result in a ..

Graham's law is useful in: Separation of gases having different densities by diffusion. Determining the densities and molecular masses of unknown gases by comparing their rates of diffusion with known gases. Separating the isotopes of some of the element..

Nuclear changes can be brought about by bombardment of nuclei with accelerated particles like neutrons, deuterons and protons. A particularly important process for the production of artificial radioactive isotope is the (n, g ) reaction, which is applied to synthesize new elements. ..