Why Fajan's Rule Changes Every Solubility Trend

Master the key concepts of *Solubility and Fajan’s Rule* in Inorganic Chemistry\! In this lecture, we break down why certain ionic compounds dissolve while others don't, how polarizability impacts covalent character, and how to easily solve tricky trend exceptions for Class 11, IIT JEE, and NEET exams. ----- 📌 *What You'll Learn:* How Fajan's Rule determines covalent character and solubility "Like dissolves like" and solvent polarity explained Lattice Enthalpy vs. Hydration Enthalpy in predicting solubility Size difference rules between cations and anions Solubility trends & key exceptions in Group 1 and Group 2 compounds Effects of polarization on compound color and acidic strength ----- ⏱️ *Timestamps / Chapters:* *00:00* – Introduction & Fajan's Rule Overview *00:35* – "Like Dissolves Like" & Solvent Polarity *02:00* – Polarizability & Solubility of Halides (AgX, PbX₂, HgX₂) *03:50* – Thermodynamics of Solubility: Spontaneity & $\Delta G$ *05:00* – Role of Enthalpy ($\Delta H$) & Entropy ($\Delta S$) *09:25* – Lattice Enthalpy vs. Hydration Enthalpy *10:05* – Cation–Anion Size Matching & Stability Rules *13:05* – Trend Exceptions: Group 1 & 2 Bicarbonates / Oxalates *16:30* – Solubility Trends for Small Sized Anions (Fluorides) *18:25* – Covalent Character & Acidic Nature of Oxides *20:20* – Effect of Polarization on Color Intensity *22:45* – Summary & Key Takeaways ----- 📚 *Relevant For:* Class 11 Chemistry, Class 12, IIT JEE (Main & Advanced), NEET, and CBSE Board Exams. 👍 If you found this lesson helpful, don't forget to Like, Share, and Subscribe to sciencemathncert for more chemistry concepts and problem-solving tips\! \#Chemistry \#FajansRule \#ChemicalBonding \#JEEChemistry \#NEETChemistry \#Class11Chemistry- *Video Timestamps / Chapters* *00:00* – Introduction & Fajan's Rule Overview *00:35* – "Like Dissolves Like" & Solvent Polarity *02:00* – Polarizability & Solubility of Halides *03:50* – Thermodynamics of Solubility: Spontaneity & $\Delta G$ *05:00* – Role of Enthalpy ($\Delta H$) & Entropy ($\Delta S$) *09:25* – Lattice Enthalpy vs. Hydration Enthalpy *10:05* – Cation–Anion Size Matching & Stability Rules *13:05* – Trend Exceptions: Group 1 & 2 Bicarbonates / Oxalates *16:30* – Solubility Trends for Small Sized Anions (Fluorides) *18:25* – Covalent Character & Acidic Nature of Oxides *20:20* – Effect of Polarization on Color Intensity *22:45* – Summary & What's Next