What is element ???
An element is a substance or chemical whose atoms are all exactly the same,with the same number of electrons,protons and neutrons.There are about 112 elements.Each element has certain physical properties,such as it's color,shininess and hardness.Other physical properties include melting point and density.And element cannot be split into more simpler substances.
Periodic Table
Periodic table is a table in which the elements are arranged according to their similarities and difference.This arrangement of the elements was th work of Mendeleev.He wrote down the features and the properties of each element on the card,then tried to arrange the cards and now which periodic table we study is the best arrangement of Mendeleev.
An element is a substance or chemical whose atoms are all exactly the same,with the same number of electrons,protons and neutrons.There are about 112 elements.Each element has certain physical properties,such as it's color,shininess and hardness.Other physical properties include melting point and density.And element cannot be split into more simpler substances.
Periodic Table
Periodic table is a table in which the elements are arranged according to their similarities and difference.This arrangement of the elements was th work of Mendeleev.He wrote down the features and the properties of each element on the card,then tried to arrange the cards and now which periodic table we study is the best arrangement of Mendeleev.
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