periodic table assignment


https://drive.google.com/file/d/19O-lvOE49DrnvAF-VQN3tcn1-jwxTwtO/view?usp=drivesdkhttps://drive.google.com/file/d/1Gy34d_RonLGQzhx7XKRkKOefufHeahlV/view?usp=drivesdk

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