nuclear stability

Surprisingly, the mass of the nucleus is less than the sum of the masses of the individual protons and neutrons which makeup the nucleus. The lost mass (mass defect) has been changed into the energy necessary to bind the nucleus togethe..

Nuclear Stability and Neutron/Proton Ratio - It has been found that the stability of nucleus depends upon its neutron to proton (n/p) ratio. A plot of N (the neutron number) against Z (atomic number or number of protons) show that for stable nuclides upto Z = 20, N = 2..

It has been found that the stability of nucleus depends upon its neutron to proton (n/p) ratio. A plot of N (the neutron number) against Z (atomic number or number of protons) show that for stable nuclides upto Z = 20, N = 20 i.e., the relationship can be represented by a line wit..

> Binding energies of the nuclei of other atoms can be calculated in a similar manner. The binding energy per nuclei particle is a measure of the stability of nucleus. Binding energy may also be considered as the energy required to separate the individual particles of the nucleus. fig.11...

The stability of a nucleus is dependent on the type of force which is dominant. The two forces operating inside a nucleus are the electrostatic force of repulsion and the nuclear force of attraction (strong force..

. The nuclear envelope preserves stability of the DNA by protecting it from respiratory destruction. The message in the DNA in the form of genes (codes) are, permanent, authentic master documents from which working copies are prepared in the form of mRNAs, as and when required b..

It is a spontaneous emission or disintegration of an unstable nucleus resulting in certain radiations. The elements exhibiting this phenomena are called radioactive elements. e.g., radium, thorium, actinium, polonium etc. Radioactivity does not occur due to any external provocation and is a propert..

The ionization energy increases with increasing atomic number in a period. This is because The nuclear charge increases on moving across a period from left to right. The atomic size decreases along a period though the main energy level remains the same. Due to the increased nu..

The sun is at the center of the solar system. Its mass is about 740 times as great as that of all the planets combined. The huge mass of the sun creates the gravitation that keeps the other objects traveling around the sun in an orderly manner. Sun The sun is a typical star, of intermediate size an..

. By supplying enough energy, it is possible to remove an electron from an atom. The element is first brought into the vapour state. Then the electron is removed by supplying energy equivalent to the ionization potential. In referring to the Periodic table of ionization potentials (in electron volt..