Dmitri Mendeleeve, a Russian chemist, is credited with inventing the Periodic Table in the late 1800s. He arranged the known elements by their atomic mass to find a pattern, placing them into columns and rows. This allowed elements to be organized based on their atomic number and properties like metals being on the left, nonmetals on the right, and metalloids in between. The document then provides an example of how each element is consistently displayed with its atomic number, symbol, name, and atomic mass.

1. The Periodic Table
By Victoria Owen
Period 4, Hendrickson Chemistry

2. Who invented it?
Dmitri Mendeleeve is credited with the invention of
the Periodic Table
Mendeleeve was a Russian Chemist.

3. Why?
Dmitri wanted to find a way to organize the
elements known at the time, and those he predicted
they would find, so he arranged the elements by
their atomic mass.

4. Full arrangement of the table.
Period
Group
Reading from left to right, they are arranged in increasing
atomic number. They are placed into columns and rows,
called groups and periods

5. Metals are on the left of the table, non metals on the right, and
metalloids running between. In each family, the elements have the
same number of outer electrons.
Noble Gases
Non metals
Metals

6. Layout of an element #1
Atomic number
Element Symbol
Name
Atomic Mass

7. Lets try again
Atomic number
Element Symbol
Name
Atomic Mass

8. It’s the same for non-
Atomic number
metals!
Element Symbol
Name
Atomic Mass