Classification of elements and periodicity in properties in tamil || class 11|| Introduction

[@study5654]

Super explanation sir 🔥🔥🔥🔥🤟

[@dragonballztamilculture3407]

Thank you sir Ilove you teaching

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🔥🔥🔥

[@riceganesan4388]

sir do you remember me im josith from coimbatore

[@dr.balaschemistrybalanagak1632]

Yes