Quantum Chemistry | Physical Chemistry | CSIR NET Chemistry june 2026 | Lec 01 | IFAS

Quantum Chemistry explained with clear concepts and exam-focused approach. Master the Simple Harmonic Oscillator (SHO) from wavefunctions and energy levels to degeneracy and zero‑point energy, all essential for CSIR NET Chemistry June 2026. This session breaks down 1D, 2D, and 3D SHO concepts with smart tricks, force‑constant relations, Hermite polynomial insights, and solved PYQs, perfect for GATE, SET, and CSIR NET physical chemistry preparation. 🔥Join India's Best Coaching for CSIR NET and GATE Exams: https://ifasonline.com/csir-net/chemi... 📞 Need Guidance? Call/WhatsApp: 9172266888 ━━━━━━━━━━━━━━━━━━━━━━━━━ ⏳ Lecture Timeline: [00:00:00] – Introduction to Quantum Chemistry [00:03:11] – Session Plan: 1D, 2D, 3D SHO [00:06:51] – Concept: SHO Classical Model [00:10:35] – Formula: V = ½ k x² [00:14:50] – Formula: ν = ½π √(k/μ) [00:16:07] – Important: Isotropic vs Anisotropic (PYQ) [00:19:58] – 1D SHO Wavefunction Form [00:23:58] – Ground State ψ₀ = (β/π)^(1/4) e^(‑βx²/2) [00:27:20] – First Excited State ψ₁ & Node Count [00:30:39] – Trick: Nodes = Vibrational Quantum Number [00:33:44] – Energy: Eᵥ = (v+½) hν [00:38:24] – Constant ΔE = hν vs 1D Box [00:41:31] – Wavefunction Graphs (Even/Odd) [00:47:16] – Concept: Even/Odd Symmetry [00:49:37] – Probability Density & Maxima [00:52:43] – PYQ: Identify ψ₀ [00:54:37] – PYQ: False Statement (SHO) [00:58:02] – Complete Session(Quantum Chemistry) ━━━━━━━━━━━━━━━━━━━━━━━━━ 📖 Topics Covered in This Lecture: • Simple Harmonic Oscillator (SHO): 1D Potential Energy, Force Constant & Restoring Force Concepts • SHO Wavefunctions: Ground State, First Excited State & Hermite Polynomial Tricks • Energy Levels: Eₙ = (n+½)hν, Spacing & Zero‑Point Energy PYQs • 2D & 3D SHO: Isotropic vs Anisotropic Potential & Degeneracy Problem‑Solving • Odd‑Even Symmetry: Wavefunction Shapes, Nodes & Probability Density Curves ━━━━━━━━━━━━━━━━━━━━━━━━━ 📚 Lecture Summary: In this session, IFAS Expert Faculty focuses on building quantum chemistry fundamentals by deriving the Simple Harmonic Oscillator potential, wavefunctions, and energy level patterns. Through step‑by‑step analysis of 1D/2D/3D SHO, isotropic–anisotropic cases, and zero‑point energy tricks, you solve CSIR NET, GATE, and SET PYQs confidently. The lecture reinforces Simple Harmonic Oscillator concepts twice over, ensuring exam‑ready retention and problem‑solving speed. ━━━━━━━━━━━━━━━━━━━━━━━━━ 🎓 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 📘 Free Counselling: https://ifasonline.com/csir-net/chemi... ━━━━━━━━━━━━━━━━━━━━━━━━━ 🔗 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   #quantumchemistry #physicalchemistry #csirnetchemistryjune2026 #csirnetchemicalscience #gatechemistry #csirnetchemistry #csirnetjune2026 #csirnetlecture #ifaschemistry