How to write electronic configurations and determine groups and periods, step by step easy methods.

Learn how to solve this chemistry question step by step:
Draw the electronic configuration of chlorine and magnesium, and state their group and period.
In this video, you will understand:
• Electronic configuration
• How to determine group
• How to determine period
This is very important for WAEC, NECO, and school exams.
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Видео How to write electronic configurations and determine groups and periods, step by step easy methods. канала Chemistry with Peace