This is a presentation on the Periodic Table of Elements, and how it came to be.

1. Intro to Elements!!!
By: Harley Giles

2. History of Elements
• In 1869, Dmitri Mendeleev published the first Periodic
Table seen below:
• It’s a visual presentation of periodic law.
• States that properties of elements appear periodically
when arranged by atomic numbers.

3. Origin
• Dmitri Mendeleev ordered the
elements according to atomic
number, as well as atomic weight.
• He also grouped them in columns and
rows based on chemical and physical
properties.

4. Origin Cont.
• The columns are called “groups” and
the rows are called “periods”.
• Elements with similar characteristics
are grouped into what are known as a
“family” or “families”.

5. Groups
Family
Rows
Visual Organization

6. Relationships
• Elements are grouped according to atomic
mass and number.
• Down and left on the table makes the
radius of each element slightly larger.
• In the “family” or “group” which are the up
and down columns, elements have the same
number of valence electrons.

7. Examples of
Relationships
• On the periodic table, certain sections have
direct relationships with one another.
• 1st column are Alkali metals. 2nd column
are Alkali Earth metals.
• 17th column are halogens.18th and last
column are noble/inert gases.

8. Works Cited
• "Home of the Periodic Table." Periodic Table of the Elements by
WebElements. N.p., n.d. Web. 23 Oct. 2012. <http://www.webelements.com/
>.
• "Discuss and Describe Some Relationships between Elements Using the
Periodic Table?" - Yahoo!7 Answers. N.p., n.d. Web. 23 Oct. 2012. <http://
au.answers.yahoo.com/question/index?qid=20110318183620AADnRAt>.
• "Origin of the Periodic Table." Origin of the Periodic Table. N.p., n.d. Web.
23 Oct. 2012. <http://www.colorado.edu/physics/2000/periodic_table/
index.html>.
• "History of the Periodic Table." Wikipedia. Wikimedia Foundation, 22 Oct.
2012. Web. 23 Oct. 2012. <http://en.wikipedia.org/wiki/
History_of_the_periodic_table>.