F BLOCK ELEMENT | One Shot Revision | MH SET | CG SET | JK SET | K SET | Lec 18 | IFAS

F-Block Elements in Inorganic Chemistry explained with clear concepts and exam-focused approach. Learn Lanthanide Contraction, Magnetic Moment Deviations, Coordination Numbers, Ionization Energy Trends & PYQ solving for CSIR NET, GATE & SET. 🧭 Get Personalized Preparation Guidance: https://ifasonline.com/csir-net/chemi... 🔥Join India's Best Coaching for CSIR NET and GATE Exams: https://ifasonline.com/csir-net/chemi... https://ifasonline.com/alumninetwork 📞 Need Guidance? Call/WhatsApp: 9172266888 ━━━━━━━━━━━━━━━━━━━━━━━━━ ⏳ Lecture Timeline: [00:00] – Introduction [01:07] – Session Overview: F-Block Elements for SET Exams [03:23] – Question 1: Lanthanide Complex Bonding & Coordination Number [06:58] – Important: Coordination Number →8 (Ceric Nitrate = 12) [07:37] – Question 2: Magnetic Moment & Spin-Orbit Coupling [08:52] – Question 3: Zr–Hf Size Similarity (Lanthanide Contraction) [10:05] – Question 4: Large Deviation from Spin-Only Formula (Samarium) [11:36] – Question 5: Highest 3rd Ionization Energy (Eu, Yb) [14:23] – Question 6: Partition Coefficient & TBP Solvent Extraction [17:17] – Question 7: Solubility & Acidity/Basicity of Lanthanide Hydroxides [19:14] – Question 8: Observed vs Calculated Magnetic Moment (Gd, Lu) [20:32] – Question 9: Magnetic Moment Formula & Spin-Only Value [22:15] – Question 10: Term Symbol & Unpaired Electrons (Sm³⁺, Eu³⁺) [24:25] – Question 11: Reducing Character – Sm²⁺ vs Eu²⁺ [27:15] – Question 12: UO₂⁺ Disproportionation & U₃O₈ Stability [29:35] – Important: Uranyl Complex Coordination Number = 8, Linear [30:03] – Question 13: Uranium & Thorium Ores (Pitchblende, Monazite) [32:25] – Question 14: Ceric Ammonium Nitrate – Diamagnetic (Ce⁴⁺, 4f⁰) [33:27] – Question 15: Lanthanide Oxides Basic Nature & Sm²⁺ Stability [35:46] – Question 16: Magic Numbers (2, 8, 20, 28, 50, 82, 126) [38:46] – Question 17: Ceric Ammonium Nitrate as Oxidizing Agent & Colors [40:34] – Question 18: Coordination Number of GdCl₃·6H₂O = 8 [42:47] – Question 19: Magnetic Moment Deviation – Sm vs Eu [44:08] – Homework Question [44:38] – End Of Lecture ━━━━━━━━━━━━━━━━━━━━━━━━━ 📖 Topics Covered in This Lecture: F-Block Elements, Lanthanide Contraction, Magnetic Moment Deviations, Coordination Numbers, Ionization Energy Trends, Partition Coefficient, TBP Solvent Extraction, Magic Numbers, Ceric Ammonium Nitrate, Uranium Ores, Lanthanide Oxides Basicity ━━━━━━━━━━━━━━━━━━━━━━━━━ 📚 Lecture Summary: In this session, IFAS Expert Faculty focuses on F-Block Elements for CSIR NET, GATE & SET. Key concepts include lanthanide/actinide bonding, lanthanide contraction, spin-orbit coupling and magnetic moment deviations (Sm, Eu), coordination numbers (Ce nitrate = 12), 3rd ionization energy trends (Eu, Yb), partition coefficient, TBP extraction, magic numbers, ceric ammonium nitrate, uranium ores, and PYQ-style problem solving. ━━━━━━━━━━━━━━━━━━━━━━━━━ 🎓 This lecture is highly beneficial for students preparing for: ✅ CSIR NET Chemical Science ✅ GATE Chemistry ✅ SET Chemistry ✅ TIFR Chemistry ✅ BARC / DRDO / ISRO Exams ✅ PhD Entrance Exams ━━━━━━━━━━━━━━━━━━━━━━━━━ 🏆 Why IFAS is India’s No. 1 Choice for CSIR NET & GATE Chemistry? (Our Results Speak): ✅ CSIR NET Dec 2025: 4000+ Selections (AIR 3, 8, 9.....) ✅ CSIR NET June 2025: 4200+ Selections (AIR 1, 2, 6, 10...) ✅ CSIR NET Dec 2024: 4000+ Selections (AIR 5, 6, 7, 8, 9...) ✅ CSIR NET June 2024: 2000+ Selections (AIR 3, 10, 13...) ✅ CSIR NET Dec 2023: 1200+ Selections (AIR 2, 4, 5...) 📄 View IFAS Result Sheet: 👉 https://drive.google.com/file/d/1THh6... ━━━━━━━━━━━━━━━━━━━━━━━━━ 🔗 Important Links: 🌍 Visit our Website: https://ifasonline.com 📞 Contact for Queries: 9172266888 ━━━━━━━━━━━━━━━━━━━━━━━━━ 🔗 India's Best Online Classes and Books: 🔥CSIR NET Chemical Science Live & Recorded Course: https://ifasonline.com/csir-net/chemi... 🎯 GATE Chemistry Recorded Course: https://ifasonline.com/gate/chemistry... 📘CSIR NET Chemical Science Books: https://ifasonline.com/csir-net/chemi... ━━━━━━━━━━━━━━━━━━━━━━━━━ 📲 Download IFAS App: Android: https://play.google.com/store/apps/de... IOS: https://apps.apple.com/us/app/ifas/id... ━━━━━━━━━━━━━━━━━━━━━━━━━ Stay Updated Via Other Social Media: ✔Telegram: https://t.me/NET_GATE_SET_ChemistryDi... ✔Instagram:   / csir_net_chemical_science   #csirnetchemicalscience #gatechemistry #csirnetchemistry #csirnetdec2026 #csirnetlecture #ifaschemistry #fblockelements #lanthanides #actinides #setexam #magneticmoment