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Identifying Elements

An element is a substance that can not be decomposed into simper substances. For example, carbon, oxygen, and gold are elements. They can not be made simpler. The number of elements in the world is limited; so far the scientists have discover about 118 elements.

Classification of Elements

In order to study and apply the properties of the elements properly, scientists organized the elements with similar physical and chemical properties in three broad groups as follows: 



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