Classification of Elements:Classification of elements related to
arrangement of elements in a specified order .This order can be
according to the atomic mass of an atom or atomic number of
atoms. Firstly let us see what is the element ? Element is the
composition of single type of atoms . For example Copper metal
is consist of only copper atoms, Silver metal is consist of
silver atoms. So composition of single type of atoms is called
element.In the modern time we have 116 elements in our nature in
addition to man-made. Atomic Number:Atomic number is defined as
the number of protons or number of electrons in an atom.For
example atomic number of zinc atom is 30 , it means zinc atom
contains 30 protons and also 30 electrons. Atomic Mass: Atomic
Mass of an atom is defined as the summation of total number of
protons and neutrons present in an atom . For example Atomic
Mass of Oxygen is 16 , it means oxygen has 8 protons and 8
electrons in its atom. The purpose of defining atomic mass and
atomic number here is to t