Periodic Classification of Elements Introduction
Introduction - At the turn of the nineteenth century, about 30 elements were known. 50 years later by the 1850s, scientists had discovered sixty three chemical elements and the numbers kept increasing. With the discovery and study of more and more elements an..
Carbon and its Compounds Introduction
Introduction - Carbon is an element which is of immense significance to us in both its elemental form and in the combined form. Most of what surround you will some compounds of carbon, including your family members and pets! The list given below illustrates t..
Compounds of Carbon Introduction
Compounds of Carbon - In the last chapter, we dealt with carbon and various allotropes of carbon. Carbon is the only element whose compounds far exceed the compounds of all other elements put together. Carbon has a variable valency of 2 and 4, and a..
Introduction
Elements of group 13 to 18 of the periodic table are collectively called 'p' block elements. The general electronic configuration of these elements is ns 2 np 1 - 6 . They involve the filling up of 'p' orbitals of their outermost shells, when their 's' orbitals are alr..
Introduction
With the rapid development of Chemistry and the discovery of new elements, it was necessary to develop a simple way to study and remember the numerous properties of the elements and their compounds. This gave rise to the necessity of classification of the el..
Introduction
With the rapid development of Chemistry and the discovery of new elements, it was necessary to develop a simple way to study and remember the numerous properties of the elements and their compounds. This gave rise to the necessity of classification of the elements..
Introduction
At the turn of the nineteenth century, about 30 elements were known. 50 years later by the 1850s, scientists had discovered sixty three chemical elements and the numbers kept increasing. With the discovery and study of more and more elements and their compounds..
Introduction
There are just 26 alphabets in English language, but the number of words are innumerable. You have studied about the 115 known elements and how they are classified for systematic and comprehensive study. Thousands of compounds are born by various chemical reactions involving the..
Introduction
Sodium belongs to Group I in the periodic table. This group is otherwise known as the alkali metals group. Since the atomic number of sodium is 11, its electronic configuration is 2,8,1. Sodium easily loses the lone electron to attain the stable configuration of neon. Therefore alkali metals like s..
Introduction
Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth and realized that..
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