class 11 chemistry atomic structure notes

Important mcqs Class 11 Chemistry with Answers Chapter wise

Chapter-Wise multiple Choice Question with brief answers for Class 11 Chemistry: Chapter 1: Basic Concepts of Chemistry Important MCQs Chapter 2 :Structure of Atom Important MCQs (Part 1) Chapter 2 :Structure of Atom Important MCQs (Part 2) Chapter 3 Chemical Bonding Important MCQs (Part 1) Chapter 3 : Chemical Bonding MCQS ( Part 2) More …

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Bohr Model of Atom – Class 11 Chemistry Chapter 2 Notes

Bohr Model of atom:             Neil Bohr in 1913 put forward a theory to develop atomic model and to overcome shortcomings of Rutherford model. Bohr theory has following postulates. Electrons revolve around the nucleus in fixed orbits (i.e. orbits of particular radii). Each orbit or shell is associated with a definite amount of energy. Electrons …

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Spectrum Chemistry |Continuous Spectrum vs Line spectrum

What is Spectrum?             “Results obtained on a screen by dispersing radiation of different wavelengths through different angles by a spectroscope” is called spectrum. Types of Spectrum : Spectrum is of two types: Continuous Spectrum: The spectrum in which different bands are not well separated by definite boundaries is called continuous spectrum. e.g. sunlight spectrum, …

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Plank’s Quantum Theory of Radiations

Plank’s Quantum Theory of Radiations: In 1900, a German Physicist Max Plank had studied radiations emitted by hot black body and proposed quantum theory of radiations. Main Postulates of Plank’s Quantum Theory of Radiations: Postulates of the theory are: Energy radiated by hot bodies is not continuous, rather it is emitted in the form of …

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Rutherford Atomic Model- Alpha Scattering Experiment

Rutherford Atomic Model:   In 1911, Lord Rutherford made an experiment to construct an atomic model. He took a thin gold foil and bombarded it with α-particles. Gold foil was surrounded by photographic film . Rutherford’s Observations: He observed in alpha scattering experiment that : Most of α-rays passed through gold foil un-deflected.                                                                                                Only a …

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