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Tag: Chemistry

Hybridization of Orbitals

Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Hybridization of Orbitals In this article, we shall study the concept of hybridization of orbitals. This concept overcomes the limitations of valence bond theory. Need for Hybridization Concept: A simple approach based on the overlap of s and p orbitals can be applied […]

Physical Chemistry

Sigma bonds and Pi Bonds

Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Sigma and Pi Bonds According to Valence Bond Theory, covalent bonds are of two types a) Sigma bond (σ) and b) Pi bond (π) Sigma bond (σ): The covalent bond formed as a result of an end to end overlap i.e. head-on collision of atomic […]

Tags Axial overlap, Chemistry, Covalent bond, Geometry of molecule, Hybridisation, Hybridization, Lateral overlap, Nature of chemical bond, Overlapping of orbitals, P-P overlap, pi bond, S-P overlap, S-S overlap, sigma bond, Valence bond theory

Physical Chemistry

Overlapping of Orbitals

Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Overlapping of Orbitals In this article, we shall study the formation of bonds by overlapping of orbitals and different types of overlaps. Formation of Hydrogen Molecule on The Basis Of Orbital Overlap: The electronic configuration of a hydrogen atom is 1s1. It contains […]

Tags Axial overlap, Chemistry, Covalent bond, Geometry of molecule, Hybridisation, Hybridization, Lateral overlap, Nature of chemical bond, Overlapping of orbitals, P-P overlap, pi bond, S-P overlap, S-S overlap, sigma bond, Valence bond theory

Physical Chemistry

Valence Bond Theory

Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Valence Bond Theory Valence bond theory was proposed by Heitler and London in (1927) and it was extended by Pauling and Slater (1931). It is based on the following concepts. The pairing of electrons. Neutralization of opposite electron spins. Overlapping of orbitals containing […]

Tags Axial overlap, Chemistry, Covalent bond, Geometry of molecule, Hybridisation, Hybridization, Lateral overlap, Nature of chemical bond, Overlapping of orbitals, P-P overlap, pi bond, S-P overlap, S-S overlap, sigma bond, Valence bond theory

Physical Chemistry

Formation of Covalent Bonds

Post author By Hemant More
Post date March 31, 2020
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Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Formation of Covalent Bonds In previous articles, we have seen formation of ionic bonds. In this article, we shall study the concept of the formation of a covalent bond. Covalent Bonds or Electron Pair Bonds: A bond established between two identical or different atoms […]

Physical Chemistry

Properties of Ionic Compounds

Post author By Hemant More
Post date March 31, 2020
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Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Properties of Ionic Compounds In this article, we shall study the properties of ionic compounds. Physical State: Due to strong electrostatic force present between the oppositely charged ions, they are held closer and fixed at specified positions in the crystal lattice. Hence ionic […]

Physical Chemistry

Factors Governing Formation of Ionic Bond

Post author By Hemant More
Post date March 31, 2020
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Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Factors Governing Formation of Ionic Bond In this article, we shall study the factors affecting the formation of the ionic bond and the concept of variable electrovalency. Ionization energy of Electropositive Atom: It is defined as the amount of energy required to remove the […]

Physical Chemistry

Octet Theory

Science > Chemistry > Physical Chemistry > Nature of Chemical Bond > Octet Theory The force of attraction which keeps atoms or ions together in a molecule is called a Chemical bond. The main cause of chemical combination is the tendency to acquire stability i.e. a state with minimum energy and a tendency to acquire […]

Physical Chemistry

Physical Equilibrium

Science > Chemistry > Chemical Equilibrium > Physical Equilibrium There are two types of equilibrium: a) physical equilibrium and b) chemical equilibrium. In this article, we shall study physical equilibrium. State of Equilibrium: In many chemical reactions, it is observed that they do not proceed to completion when they are carried out in a closed […]

Tags Chemical equilibrium, Chemical reaction, Chemistry, Endothermic reaction, Equilibrium, Exothermic reaction, Heterogeneous reaction, Homogeneous reaction, Irreversible reaction, Liquid-Vapour equilibrium, Physical equilibrium, Products, Reactants, Reversible reaction, Solid-Gas equilibrium, Solid-Liquid equilibrium, State of equilibrium

Physical Chemistry

Types of Chemical Reactions

Post author By Hemant More
Post date March 10, 2020
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Science > Chemistry > Chemical Equilibrium > Types of Chemical Reactions In this article, we shall discuss only those types of chemical reactions which are linked to the topic of chemical equilibrium. Chemical Reaction: In a chemical reaction one or more substances, called reactants undergo a chemical change to produce new substances called products of […]

Tags Chemical equilibrium, Chemical reaction, Chemistry, Endothermic reaction, Equilibrium, Exothermic reaction, Heterogeneous reaction, Homogeneous reaction, Irreversible reaction, Physical equilibrium, Products, Reactants, Reversible reaction