Chemistry

  • Gay Lussac's Law

    Gay Lussac’s Law: Formula and Definition

    What is Gay Lussac’s Law Joseph Gay Lussac in 1802, established the pressure-temperature law which is called Gay Lussac’s law also known as Amontons’s law. This law states that “The pressure of the fixed mass of the gas is directly…

  • Graham's Law

    Graham’s Law of Diffusion: Statement & Formula

    Graham’s Law of Diffusion: Graham in 1829, observed the spreading out or diffusion of gases. He postulated that the rate of the diffusion of the gas does not depend upon gravity, but it depends upon the temperature of a gas. This…

  • Structure of Ionic Compounds

    Structure of Ionic Compounds with Definition and Examples

    Structure of Ionic Compounds: There are four structures that account for a large number of the  1:1 ionic solids. These are NaCl, CsCl, zinc blende, and wurtzite. The mineral zinc blende and wurtiz1te both consist of ZnS, but they have…

  • ionic bond

    Ionic Bond Definition Examples and Properties in chemistry

    An ionic bond is the result of electrostatic attraction between positively bonding occurs most easily when elements with low ionization energies (metals) react with elements with high electronegativities and high electron affinities (nonmetals). the atoms of different substances and elements…

  • Chemical Bonding

    Electronic theory of Chemical Bonding

    “A chemical bond is defined as a force that holds two or more atoms together as a stable molecule”. Electrons play a key role in the Electronic Theory of Chemical Bonding. The attractive forces exist between atoms. The molecules of…

  • periodic Table

    Periodicity of Compounds in periodic Table

    The properties of the elements affect the properties of their compounds. We find a number of correlations between the properties of compounds and the positions of their constituent elements in the periodic table. Such correlations are especially clear in halides,…

  • Polarizability and Charge density

    Polarizability Formula and Definition

    The ratio of the size of an ion to its charge is called charge density. Generally, positive ions have higher charge density and smaller size and negative ions have a large charge but low charge density (except F– and 0-2 ions). The…

  • Oxidation State

    Oxidation State or Oxidation Number of Elements

    The Oxidation State or Oxidation number of an atom in a  substance is defined as the actual charge of the atom if it exists as a monoatomic ion, or a  hypothetical charge assigned to the atom in the substance by simple (or set) rules. The oxidation…

  • Electrical Conductance

    Electrical Conductance with Definition and Measurement

    The reciprocal of resistance is called Electrical Conductance. The most important property of metals is their ability to conduct electricity. The delocalized electrons in metal give rise to electrical and thermal conductivity.  This property is mainly due to the presence…

  • Hydration Energy

    Hydration Energy Definition & Meanings : A Complete Guide

    Hydration of ions is an exothermic process. The energy released when one mole of an ion in the gaseous state is dissolved in water to get it hydrated is called hydration energy. It is the energy released in the hydration of  M+(g)…

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