Introduction
A table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns. 1.) The Periodic Table is a chart which arranges the chemical elements in a useful, logical manner. 2.) There are 90 elements on the periodic table that nature.All of the other elements are strictly man-made. 3.) Technetium was the first element to be made artificially. 4.) The International Union of Pure Applied Chemistry, IUPAC, revises the periodic table as new data becomes available. At the time of this writing, the most recent version of the periodic table was approved 19 February 2010. 5.) The rows of the periodic table are called periods. An element's period number is the highest unexcited energy level for an electron of that element. 6.) Columns of elements help to distinguish groups in the periodic table. Elements within a group share several common properties and often have the same outer electron arrangement.
Task
You have to find 17 medals from the periodic table.
1.)
2.)
3.)
4.)
5.)
6.)
7.)
8.)
9.)
10.)
11.)
12.)
13.)
14.)
15.)
16.)
17.)