Periodic Table by Dr Bbosa Science

Describes variation of electronegativity, electropositivity, atomic radii, ionization energies, electron affinities and melting points in the periodic table

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    kairukirizi shzrif hakim 2 years

    its good and nice but continue adding videos of dissection in biology alevel

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    Well done Sir,but I need more,send for me in facebook just search Fedz Ug with black and white profile picture

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