The periodic table - introduction

The periodic table - introductionLesson 712/27/2011Atoms and The Periodic Table Prepared by JGL1

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 each element

12/27/2011Atoms and The Periodic Table Prepared by JGL2Syllabus objective met:

Recognize that elements are arranged in a systematic way

The Periodic TableTo simplify matters all elements are given a symbol (somewhat like a nickname)

Other information can also be included such as Ar, and Z

12/27/2011Atoms and The Periodic Table Prepared by JGL3

Elements and symbolsElementSymbolAtomic Number (Z)Electronic configurationHydrogenH11HeliumHe22LithiumLi32,1BerylliumBe42,2BoronB52,3CarbonC62,4NitrogenN72,5OxygenO82,6FluorineF92,7NeonNe102,8

12/27/2011Atoms and The Periodic Table Prepared by JGL4Syllabus objective met:

Recognize that each element has a unique atomic number and symbol

Know the first twenty elements in order and their symbols

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Elements and symbolsElementSymbolAtomic Number (Z)Electronic configurationSodiumNa112,8,1MagnesiumMg122,8,2AluminiumAl132,8,3SiliconSi142,8,4PhosphorusP152,8,5SulphurS162,8,6ChlorineCl172,8,7ArgonAr182,8,8PotassiumK192,8,8,1CalciumCa202,8,8,2

12/27/2011Atoms and The Periodic Table Prepared by JGL5

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