Radioisotopes has many uses in science and technology here is this article i will explain some situations which radioisotopes are used.
Radioisotopes are formed by artificial radioactivity. Let us look various uses of that.

• Radioisotopes are used for the treatment of cancer
• Radioisotopes are used for sterilizing surgical instruments.
• Radioisotopes are used as a tracer for diagnosing various diseases 
• Radioisotopes are used as a tracer for determining efficiency of thyroid gland, kidney etc....
• Radioisotopes are used to identify defects in metallic castings and pipes.
• Radioisotopes are used a s a tracer for determining effects of chemical substance in plants and animals.
• Radioisotopes are used for sterilizing food stuffs.
• Radioisotopes used for calculating blood circulation.

This is a good way to treat cancer. The gamma rays of this Radioisotopes has high penetrating power and also it has a power to destroy cells. So doctors allow this gamma rays to fall on parts where cancer affected and thereby the cancer affected cells are destroyed. 
These are some brief uses there are also many other variety of use for this. It will be on our coming posts. 
Bye take care. Please do a comment.

In recent years, stem cell research has undergone a successful development: early 20thCentury, researchers had the primary basis for cell research developed: a collection of cells could be reproduced in culture dish. During the sixties, scientists discovered the first time a revolutionary type of cells in the bone marrow of mice. Since the 1970s, which is stem cell therapy in pathological lesions of the blood like leukemia conducted. In 1981, the first time stem cells from mouse embryos cultured in the laboratory. Research results showed the existence of stem cells in umbilical cord blood of the embryo. Shortly thereafter, test subjects with anemia-administered to a cord blood disease. Since the mid-1990s by the science in many internal organs and tissues of adult stem cells. These stem cells were able to be processed so from now that they are stably propagated. From these stem cells from embryos, cells that are similar to the nerve cells develop, so the clinical management department sclerosis similar nerve disorders in the research projects improved.Beginning of this century was the research department in Sweden, a breakthrough: The brain-derived stem cells in adult mice made the production of tissue types possible by the location of their planting, for example, the structure of the heart get dependent. Similarly, people familiar with stem cells from the research community now by the same reaction possible: In 2001, the targeted cells to the marrow of the bone in individuals with a previous heart attack to repair the diseased tissue area uses off. Adopted in 2002, the German Parliament, only to imported embryonic stem cells and specific instructions to tolerate this line of research. Parents can be a stem cell storage of cord blood cause of that he possibly affiliated or kinship itself can be useful forever. The giving birth can also be removed from pull one: the corresponding skin is taken from the placenta detached from and stored in refrigerators, or can be used in skin grafts after that. Own stem cells from the skin are excellent for the use of stem cells in the recovery dermatology in the preparation of tissue types, and up into old age can be used. In contrast to cells from the marrow of the bones and skin, the umbilical cord blood also has countless stem cells - the procedure is also simple and harmless. Due to progress in the fields of stem cell research, there are well-founded suspicion, in years, diseases such as arthritis by means of a stem cell therapy can improve a few that.

Currently just over 100 elements are known, of which 92 occur in nature. Each element is characterized in that its atoms have the same number of protons and electrons and neutrons. The number of protons is the atomic number or atomic number. The lightest atom is the hydrogen with a proton. The second (helium) has two protons, the next (Li) has three protons and so on. Almost the entire mass of an atom is concentrated in its nucleus containing the protons and neutrons. He has a diameter of several meter (1 FM = .0000000000000001 m). The distance of the electrons from the nucleus is about 0.1 NM 
The chemical and physical properties of the elements are determined by the number of electrons and the distribution.The core is electrically charged positive, the electrons are electrically charged negative. This means that the core and the electron shell attract each other, while the electrons repel each other. The electrons are arranged in so-called shells, which can accommodate all the more so the further out they are. The first shell contains a maximum of 2 electrons, the second 8, third 18 and fourth 32nd The next shell can hold more electrons, but not in the previously known elements were taken. 
Elements with only one electron in the outer shell (such as hydrogen, lithium, potassium) are and those where only one electron is missing from the outer shell (such as land, chlorine or bromine) and are therefore very reactive in nature almost exclusively in compounds before. Elements in which the outer shell is full (like the noble gases helium, neon, argon) are chemically inert, meaning they do not respond practically.
The calculation of the electron configuration and the possible interpretation of one of the great successes of quantum mechanics in the 1920s.