Fajans' Rule Explained 🔥 | Covalent Character & Polarisation | NEET 2027 Chemistry | L-11

🔥 *NEET 2027 CHEMISTRY | LECTURE 11* 🔥 📚 *Chapter:* Chemical Bonding & Molecular Structure ⚛️ *Topic:* Fajans' Rule – Covalent Character in Ionic Compounds 👨‍🏫 *Faculty:* Hemant Bansal Sir 🎯 *Target:* NEET UG 2027 Welcome to Lecture 11 of our Complete NEET 2027 Chemistry Course! After understanding Molecular Orbital Theory (MOT), we now move to another important concept of Chemical Bonding — **FAJANS' RULE**. Why do some ionic compounds show covalent character? Why is LiI more covalent than LiF? How do the size and charge of ions affect the nature of chemical bonds? In this lecture, Hemant Bansal Sir explains Fajans' Rule from the basics with clear examples, comparisons and NEET-oriented questions. 📌 Topics Covered ✅ Introduction to Fajans' Rule ✅ Ionic and Covalent Character ✅ Polarisation of Anions ✅ Polarising Power of Cations ✅ Polarisability of Anions ✅ Effect of Cation Size ✅ Effect of Anion Size ✅ Effect of Ionic Charge ✅ Electronic Configuration and Polarisation ✅ Comparison of Ionic Compounds ✅ LiF, LiCl, LiBr and LiI ✅ Important Exceptions and Applications ✅ NCERT-Based Concepts ✅ NEET Previous Year Questions ✅ Practice Questions and Tricks ⚛️ Important Concepts *Smaller Cation = Greater Polarising Power* *Larger Anion = Greater Polarisability* *Greater Polarisation = Greater Covalent Character* For the same cation, covalent character generally increases with increasing anion size. Example: LiF: Relatively less covalent character LiCl: Greater covalent character than LiF LiBr: Greater covalent character than LiCl LiI: Greatest covalent character among these four 🧠 Why Is Fajans' Rule Important for NEET? Fajans' Rule helps explain: ✔️ Ionic vs Covalent Character ✔️ Comparison of Compounds ✔️ Polarising Power ✔️ Polarisability ✔️ Trends in Bonding Behaviour ✔️ Important NCERT-Based Questions Don't just memorise the order of compounds. Understand the reason behind the trends. 🎯 Our NEET 2027 Chemistry Approach ✔️ Concept Clarity ✔️ NCERT-Focused Preparation ✔️ Visual Learning ✔️ Step-by-Step Explanation ✔️ NEET-Oriented Examples ✔️ PYQs and Practice Questions ✔️ Tricks and Mnemonics 🩺 *NEET 2027 Aspirants!* Small concepts can make a big difference in your NEET score. Build strong fundamentals, practise regularly and revise consistently. 📚 STUDY | ✍️ PRACTICE | 🔄 REVISE | 🏆 SUCCEED 👍 LIKE this lecture if you find it useful. 📤 SHARE it with your NEET 2027 friends. 💬 COMMENT your answers and doubts. 🔔 SUBSCRIBE for upcoming Chemistry lectures. *CONCEPT • PRACTICE • CONSISTENCY • SUCCESS* #NEET2027 #NEETChemistry #FajansRule #ChemicalBonding #Polarisation #HemantBansalSir