A brief look at what the Periodic Table is

1. The periodic table - introduction
Lesson 7
1 Atoms and The Periodic Table Prepared by JGL 12/27/2011

2. What is the Periodic Table?
A tabular arrangement of the elements according to
their atomic numbers so that elements with similar
properties are in the same column.
This is an easy reference chart for chemists to use to
interpret the properties of groups of elements,
rather than try to memorize all the properties of
Syllabuselement
each objective met:
Recognize that elements are arranged in a systematic way
2 Atoms and The Periodic Table Prepared by JGL 12/27/2011

3. The Periodic Table
To simplify matters all elements are given a
symbol (somewhat like a nickname)
Other information can also be included such
as Ar, and Z
3 Atoms and The Periodic Table Prepared by JGL 12/27/2011

4. Elements and symbols
Element Symbol Atomic Electronic
Number (Z) configuration
Syllabus objective
met:
Hydrogen H 1 1
Helium He 2 2 Recognize that each
Lithium Li 3 2,1 element has a unique
atomic number and
Beryllium Be 4 2,2
symbol
Boron B 5 2,3
Carbon C 6 2,4 Know the first twenty
elements in order and
Nitrogen N 7 2,5
their symbols
Oxygen O 8 2,6
Fluorine F 9 2,7
Neon Ne 10 2,8
4 Atoms and The Periodic Table Prepared by JGL 12/27/2011

5. Elements and symbols
Element Symbol Atomic Electronic
Number (Z) configuration
Sodium Na 11 2,8,1
Magnesium Mg 12 2,8,2
Aluminium Al 13 2,8,3
Silicon Si 14 2,8,4
Phosphorus P 15 2,8,5
Sulphur S 16 2,8,6
Chlorine Cl 17 2,8,7
Argon Ar 18 2,8,8
Potassium K 19 2,8,8,1
Calcium Ca 20 2,8,8,2
5 Atoms and The Periodic Table Prepared by JGL 12/27/2011