Don't lose your points!
Sign up and save them.
+
Elements

Elements

Rating:
Rating
(0)
Author: Nathan Lampson
Description:

This lesson will explain the arrangement of elements on the periodic table, including the relationships among elements in a given column or row.

(more)
See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

28 Sophia partners guarantee credit transfer.

281 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

Elements are pure chemical substances of one type of atom.  Elements come together to produce more complex compounds, but the periodic table only contains information about each type of pure chemical atom.

Elements are placed on a periodic table according to their atomic structure.  On the periodic table, elements are identified by their chemical symbol.  Carbon's chemical symbol is C.  Most of the symbols for elements are based on abbreviations of their english name.

Each vertical column of elements on the periodic table is called a group.  Groups of elements on the periodic table are determined by the number of valence electrons atoms of the element have in their outer most energy level.  As groups move from left to right on the periodic table, the number of valence electrons an atom contains increases.

The horizontal rows on the periodic table are known as periods.  Each period on the periodic table displays elements in increasing atomic mass and atomic number from left to right. Periods on the periodic table can be used to indicate the number of electron shells (orbitals) an element has.