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Unacademy Overview

  • Unacademy Atoms: A platform providing educational resources for JEE (Joint Entrance Examination) preparation.

  • Target Audience: Students preparing for IIT and other engineering entrance exams.

Educator Profile

  • Sakshi Vora:

    • From IIT Roorkee.

    • State Topper for CBSE in classes 10 and 12.

    • KVPY Fellow and 7+ years teaching experience.

Unacademy Atoms Community

  • Telegram Channel: 1,244 subscribers.

  • Benefits of Joining:

    • Access to live sessions, interactive quizzes, strategies, tips, and free notes.

Subscription Features

  • Types of Interaction:

    • LIVE Polls & Leaderboard.

    • LIVE Doubt Solving.

    • Engaging Class Environment.

    • Performance Analysis through Weekly Tests and Quizzes.

Subscription Plans

IIT JEE Subscription Plans

  • Subscription Types:

    • Plus: Interactive live classes and structured courses & PDFs.

    • Iconic: Includes personal coaching and study planning.

  • Cost Overview:

    • Various plans available based on duration (1 month to 24 months).

    • No-cost EMIs and discounts available on upfront payments.

Educational Batches Offered

  • Specialized batches for JEE Advanced, Rapid Revision, and Grade 12 syllabus.

  • Mention of relevant educators and course start dates.

High Achievers

  • Recognition of top scorers achieving percentile rankings above 99% in recent JEE results.

General Organic Chemistry Notes

Types of Bond Fission

  • Homolytic Bond Fission:

    • Equal sharing of bonding electrons leading to radical formation.

  • Heterolytic Bond Fission:

    • Unequal sharing where more electronegative atom takes both bonding electrons, resulting in ions.

    • Conditionally occurs in polar solvents.

Reaction Intermediates

  • Carbocations:

    • Trivalent, incomplete octet, characterized by high instability and reactivity.

    • Lewis acids, sp2 hybridization, bond angle of 120°.

  • Carbon Free Radicals:

    • Incomplete octet and paramagnetic nature, with sp2 hybridization.

  • Carbanions:

    • Complete octet, reactive, sp3 hybridization, pyramidal shape, bond angle ≤ 108°.

Key Effects in Organic Chemistry

  • Inductive Effect:

    • Permanent displacement of sigma electrons due to electronegativity difference.

  • Hyperconjugation:

    • Permanent shifting of electron density due to overlapping of sigma bonds with an adjacent empty p-orbital;

    • Stronger than inductive effects but weaker than resonance.

Resonance and Stability

  • Criteria for Resonance:

    • Planarity and conjugation of p orbitals are essential.

  • Factors Affecting Stability of Resonating Structures:

    • Complete octets contribute to higher stability.

    • Position of charges (negative on electronegative atoms) increases stability.

Conclusion

  • Unacademy Atoms offers comprehensive resources for students aiming for success in engineering entrance examinations through quality teaching and dynamic interactions.