05:44What is electronegativity | Chemistry | Electronegativity IIT JEE | Electronegativity NEETExtraclass Official401views
08:34The Periodic Table EXPLAINED | Chemical Families and Periodic TrendsThe Science Classroom715views
24:55Periodic Trends: Electronegativity, Ionization Energy, Atomic Radius - TUTOR HOTLINEMelissa Maribel269views