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#chemistry #chemistry_class_11 #education #New_first_year_chemistry Playlist with all Chemistry lectures for class 11 new book • Class 11 chemistry new syllabus 2025 Pakis... Chemistry Notes for Lecture #06 https://umairkhanacademy.com/free-not... You can get the full chapter in a single PDF without a watermark here. https://umairkhanacademy.com/get-fsc-... Electronegativity | Class 11 Chemistry Chapter 1 Lecture | Sir Umair Khan In this lecture, Sir Umair Khan explains the concept of Electronegativity from Chapter 1 of Class 11 Chemistry (New Book). This lecture is designed in a simple, exam-focused way to help students understand and remember one of the most important periodic properties. 🔹 What you will learn in this lecture: Definition of Electronegativity Factors affecting Electronegativity (atomic size, nuclear charge, shielding effect, etc.) Different scales of Electronegativity (Pauling scale, Mulliken scale, etc.) Trends of Electronegativity across a period and down a group Relationship between Electronegativity and bond type (ionic, covalent, polar covalent) Applications of Electronegativity in predicting chemical reactivity 📘 About Electronegativity: Electronegativity is the tendency of an atom to attract a shared pair of electrons towards itself in a chemical bond. It plays a key role in determining the polarity of bonds, the strength of interactions, and the chemical behavior of elements. 👨🏫 About this series: This lecture is part of Class 11 Chemistry Chapter 1 (New Book). Sir Umair Khan explains each topic step by step with examples and exam-style explanations to prepare students for board exams and entry tests (MDCAT & ECAT). 👉 Don’t forget to Like, Share & Subscribe for more Class 11 and 12 Chemistry lectures. #electronaffinity #highAchieversChemistry #umairkhanacademy #1styearchemistry2025 #chemistry2025 #fscchemistry2025 Related Topic search: Arrangement of elements in the periodic table, Positions of metals, nonmetals and metalloids in the periodic table, Periodic table arranged into four blocks, Period number (n) is the outer energy level, Physical and chemical properties of oxides, Reactions of oxides (acidic and basic) with water, Acid/base behavior of the oxides and the hydroxides, Amphoteric behavior, Reactions of the chlorides with water, Historical Background, Elements known to humanity centuries ago, Antoine Lavoisier attempted to classify known elements as metals and nonmetals, Döbereiner grouped the elements into triads, John Newlands first time observed periodicity in the 62 known elements, Dmitri Mendeleev arranged 63 elements, Success of his table was hidden in leaving gaps for undiscovered elements, Lothar Meyer developed his curves, Moseley determined the exact atomic numbers of known elements, Modern Periodic Law, Modern Periodic Table - Features and Significance, 118 elements grouped in ascending order of their respective atomic numbers, Seven horizontal rows called periods and eighteen vertical columns called groups, Older versions of the table, Metals, Non-metals and Metalloids, Metals are elements which tend to lose electrons to form positive ions, Non-metals are elements which tend to gain electrons to form negative ions, Metalloids separate the metals and nonmetals, Blocks in Periodic Table, Elements classified based on the subshells containing their valence electrons, s-block elements, d-block elements, f-block elements (Lanthanides and Actinides), p-block elements (groups 13 to 18), Halogens (Group 17), Noble Gases (Group 18), Electronic Configuration of elements, Chemical Reactivity of elements, Metallic character, Variation in atomic radius, Factors affect atomic and ionic radii, Variation in Ionic Radius, Relative sizes of atomic radii, Relative sizes of an atom and its ion, Variation in Ionization Energy, 1st ionization energy (Delta H i 1), Successive Ionization Energies of the Same Element, First Ionization Energies of Different Atoms, Variation in Electron Affinity (EA), Factors affecting electron affinity, Why Fluorine has lower electron affinity than Chlorine, Variation in Electronegativity, Trends in various physical properties in the periodic table, Variation in Metallic Character, Reactions of Na and Mg with water, oxygen and chlorine, Classification of Oxides, Classification of Chlorides, Neutral Chlorides, Acidic Chlorides, Variation in oxidation number (oxidation state), Oxidation state of sulfur in SO2 and SO3, Why some p block elements show variable oxidation state, Groups and Families, Alkali Metals, Alkaline Earth Metals, Transition Elements.