Periodic Table of Elements Best Resource
The purpose of the periodic table is to illustrate recurring
trends in properties of elements. Since its creation, the
table has been further refined and expanded to include new
elements as they are discovered. The table is a key reference for the
study of chemistry as well as other subjects, by providing a visual
framework for classification and comparison for varieties of chemical
The periodic table has a very straightforward structure to
systematize and organize the understanding of elemental chemical
behavior. Although several variations of the table exist, along a
fairly wide continuum of complexity, there is a basic structure common
to most. The layout of the table is intended to be periodic or stated
simply, to illustrate recurring chemical properties. The elements in
the table are listing according to increasing atomic number, which is
the number of protons in the nucleus of an atom. It is also worth
noting that not all elements are products of nature, some 118 elements
in existence as of 2010 are synthetic elements that are artificially
produced using particle accelerators.
Metals and Non-metals
In some tables, a bold step-like line divides metals on the
left and non-metals on the right table side.
The rows of the table are configured so that elements that
have like properties are in the same columns, called families or
groups. Some of these groups are given names based on properties, which
are trivial or more simply of no systematic significance. Some examples
are alkali metals, alkaline metals, and noble gases. Groups without
arbitrary names are referred to by their group number.
Each row of the table, period, in the table corresponds to a
filling of shell electrons. The periods get longer as one progresses
further down the table.
There are several regions of the table that are referred to as
blocks, they are named according to the sub shell that the last
electron resides at. The 's-block' includes alkali and alkaline metals,
it also includes hydrogen and helium. The 'p-block' includes groups 13
to 18 as well as all semi metals. The 'd-block' includes groups 3 to
12' as well as all transition metals. Lastly, the 'f-block', which is
separated from the rest of the table at the bottom includes all the
rare earth metals.
History of Periodic Table
Origin of the Periodic Table -
Great illustrated time line style resource with detailed
explanation explaining the intellectual development of the periodic
the History of the Periodic Table -
Nice article chronicling the development of the Periodic
History of Periodic Tables Powerpoint -
Neat power point presentation on important intellectuals
contributing to the development of the tables.
Periodic Table Quiz-Test your
Knowledge, quiz on the periodic tables.
P-Table-Amazing Table with visually amazing group distinction
as well as intuitive, accessible and breathtakingly extensive
information on each element, including common uses and external
resources for each all elements.
Common Uses Table-See a visual
sample of each table and learn common uses by hovering your mouse over
Simple Table-Basic Table for those
looking for basic information on elements, compounds, and origins.
P-Table Quiz-Take the name that
P-Table Understanding Quiz-Quiz to
test your skills on symbols, names, and groups.
P-Table lessons-A great list of
lessons on the Periodic Tables, from basic to intermediate. Also
includes games and puzzles.
P-Table Multimedia -Nice selection
of videos showing experiments with different elements, narrowly
targeted to illustrating important points and adding a multimedia touch
to any lesson plan.
Reading P-Table Lesson Plan-Straightforward
but well structured plan for teaching students to read the table.
High School P-Table Lesson Plan-Great
high school level lesson plan, includes game and activities.
Advanced Concepts in Chemistry-Challenging
concepts for the bold and daring.
Web Resources-Great resource page with some of the most
reputable chemistry resources on the net.