1.22: Understand How the Electronic Configuration of a Main Group Element is Related to its Position in the Periodic Table

ELECTRONIC CONFIGURATION: Arrangement of Electrons into shells for an Atom (E.g Electronic Configuration of Carbon is  2 . 4 )

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ELECTRONIC CONFIGURATION AND POSITION IN PERIODIC TABLE

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• Number of notations in electronic configuration will show the number of shells of Electrons the Atom has, showing the Period
• Last Notation shows the number ofouter Electrons the Atom has, showing the Group

EXAMPLE:  Electronic Configuration of Chlorine:

PERIOD: Red numbers at the Bottom Show the number of notations which is 3, indicating that Chlorine atom has 3 shells of Electrons

GROUP: Green box highlights the last notation which is 7, indicating that Chlorine atom has 7 outer Electrons

ON THE PERIODIC TABLE:

Diagram showing the position of Chlorine on the Periodic Table