Periodic Table of elemints.

Hi,
Today we are going to talk about the Periodic Table of elements. The Periodic Table of elements is a table where are the elements are listed in certain rows and columns. There are 112 elements on it. The father of the periodic table is Dmitri Mendeleev. He created the first in 1871. In the modern table, the elements are organized in the increasing order atomic number. The atomic number is the number of protons in a atom of the element. All elements are made up of the smallest particles called atoms. Each atom is made up of three fundamental particles such as electrons, protons, and neutrons. The vertical columns are called groups or families and the horizontal rows are called periods.
Each element has a symbol witch could have 1-2 letters. This symbol is given in the table. In addition to the chemical symbol, atomic number, atomic mass, physical state of each element, group numbers, and electron arangement are also given. The elements are classified into mainly 4 classes such as noble gasses, main group elements, transition metals and inner transition metals.
Here is a link to a table.http://www.popsci.com/files/periodic_popup.html