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Electronic configuration and position in periodic table

 Electronic configuration and position in periodic table https://docs.google.com/presentation/d/1kgM3hPdeL6efUtRQgCLkLOs1Xo_L6lye/edit?usp=sharing&ouid=103393407506730943424&rtpof=true&sd=true

History of Periodic Table

 https://docs.google.com/presentation/d/1w00VkG-DHsboJZSL5ioZQFEl9EMerzPK/edit?usp=sharing&ouid=103393407506730943424&rtpof=true&sd=true History of periodic table