Topic on periodic table on chemical elements impact in human welfare??
Answers
Explanation:
The periodic table is one of the most important tools in the history of chemistry. It describes the atomic properties of every known chemical element in a concise format, including the atomic number, atomic mass and relationships between the elements. Elements with similar chemical properties are arranged in columns in the periodic table.
The periodic table can be used to identify the matter already discovered by mankind. However, if new matter is discovered, then the atomic structure of the new matter can be compared to the elements in the table in order to classify the new material. Scientists can use the data in the table to figure out how the new matter may behave or what elements to which the new matter may be similar through this comparison.
Historical Perspective
Scientists can use the information in the periodic table to know when elements have been acted upon in some way. For instance, if scientists know that the basic form of an element has a particular number of neutrons, then they know that something has to have happened to the element if an isotope (an atom with the same number of protons but a different number of neutrons than the base element) is discovered. They may not know exactly what caused the isotope to form, but they can know with certainty that something did occur. This gives historical perspective.
The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev.
Mendeleev intended the table to illustrate recurring ("periodic") trends in the properties of the elements.
The layout of the table has been refined and extended over time, as many new elements have been discovered since Mendeleev's time, and new theoretical models have been developed to explain chemical behavior.
Various layouts are possible to emphasize different aspects of behavior; the most common forms, however, are still quite similar to Mendeleev's original design.
The main value of the periodic table is the ability to predict the chemical properties of an element based on its location on the table.
It should be noted that the properties vary differently when moving vertically along the columns of the table, than when moving horizontally along the rows.
The periodic table is now ubiquitous within the academic discipline of chemistry, providing an extremely useful framework to classify, systematize and compare all the many different forms of chemical behavior.
The table has also found wide application in physics, biology, engineering, and industry.