Category: Pure Sciences

Introduction to Chemical Kinetics

Post author By Hemant More
Post date July 31, 2020
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Science > Chemistry > Chemical Kinetics > Introduction to Chemical Kinetics In this article, we shall discuss the concept of chemical kinetics, rate of reactions, and types of reactions on the basis of their rates. Rate of Reaction: The branch of chemistry, which deals with the rate of chemical reactions, the factors affecting the rate […]

Physical Chemistry

Dual Nature of Radiations

Post author By Hemant More
Post date July 31, 2020
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Science > Chemistry > Atomic Structure > Dual Nature of Radiations Light and other electromagnetic radiations have dual nature viz: the particle nature and the wave nature. Wave Nature of Radiations: Radiation is the form of energy, which can be transferred from one point to another point in space. Radiations are considered to be transmitted by wave […]

Tags Atomic structure, Chemistry, Concept of Orbitals, De-Broglie equation, De-Broglie hypothesis, Dual nature of radiations, Heisenberg’s Uncertainty Principle, Particle nature of radiation, Planck's quantum theory, Schrodinger’s Wave Equation, Structure of atom, Wave nature of radiation

Physical Chemistry

Heisenberg’s Uncertainty Principle

Post author By Hemant More
Post date July 31, 2020
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Science > Chemistry > Atomic Structure > Heisenberg’s Uncertainty Principle In this article, we shall study Heisenberg’s uncertainty principle, the concept of quantum numbers, and the model of an atom based on the quantum numbers. Heisenberg’s Uncertainty Principle: Werner Heisenberg a German physicist in 1927, stated the uncertainty principle which is the consequence of dual behaviour of […]

Tags Atomic structure, Chemistry, Concept of Orbitals, De-Broglie equation, De-Broglie hypothesis, Dual nature of radiations, Heisenberg’s Uncertainty Principle, Particle nature of radiation, Planck's quantum theory, Schrodinger’s Wave Equation, Structure of atom, Wave nature of radiation

Physical Chemistry

Quantum Numbers and Quantum Model of an Atom

Post author By Hemant More
Post date July 31, 2020
2 Comments on Quantum Numbers and Quantum Model of an Atom

Science > Chemistry > Atomic Structure > Quantum Numbers and Quantum Model of an Atom In this article, we shall study the concept of quantum numbers and the model of an atom based on the quantum numbers. Concept of Quantum Numbers: In 1926, Erwin Schrodinger put forward a theory of atom called as a quantum […]

Physical Chemistry

Quantum Numbers and Shapes of Orbitals

Post author By Hemant More
Post date July 30, 2020
4 Comments on Quantum Numbers and Shapes of Orbitals

Science > Chemistry > Atomic Structure > Quantum Numbers and Shapes of Orbitals In this article, we shall study the concept of quantum numbers and different types of orbitals and their shapes. Difference Between Shell, Subshell, and Orbital: All electrons that have the same value for n (the principal quantum number) are in the same […]

Physical Chemistry

Electronic Configuration

Science > Chemistry > Atomic Structure > Electronic Configuration The distribution of electrons in various shells and orbitals of an atom is known as electronic configuration. Generally electronic configuration is given by nlx. Where n is shell number, l is subshell and x are the number of electrons. Aufbau Principle: The arrangement of the electrons […]

Physical Chemistry

Rutherford’s Atomic Model

Post author By Hemant More
Post date July 30, 2020
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Science > Chemistry > Atomic Structure > Rutherford’s Atomic Model In this article, we shall study Thomson’s model of an atom and its deficiencies and Rutherford’s atomic model and its deficiencies. Thomson’s Model of an Atom: J. J. Thomson, in 1898, proposed that an atom possesses a spherical shape (radius approximately 10–10 m) in which the positive charge […]

Physical Chemistry

Discovery of Proton and Neutron

Post author By Hemant More
Post date July 30, 2020
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Science > Chemistry > Atomic Structure > Discovery of Proton and Neutron In last article, we have discussed, the discovery of electron and characteristics of electron. In this article, we shall discuss the discovery of proton and neutron and their characteristics. Discovery of Proton: Proton was discovered by E. Goldstein in 1886. He performed the […]

Physical Chemistry

Discovery of Electron

Science > Chemistry > Atomic Structure > Discovery of Electron In this article, we shall study earlier concepts of an atom, discovery of electron, and its characteristics. 600 B.C. Indian saint and philosopher Maharshi Kanad proposed that matter is made up of the smallest individual particles. He called these particles ‘paramanu’. Around 400 B.C. The […]

Physical Chemistry

Radioactivity

Science > Chemistry > Atomic Structure > Radioactivity Radioactivity was discovered by French physicist Antoine Becquerel in 1896. The phenomenon of spontaneous and continuous and uncontrollable disintegration of an unstable nucleus accompanied by the emission of active radiations is called natural radioactivity. The substance which exhibits radioactivity is called a radioactive substance. e.g. Uranium, thorium, […]