Tag: 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, […]

Inorganic Chemistry

Hydroxides of the Third Row Elements

Post author By Hemant More
Post date June 2, 2020
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Science > Chemistry > Third Row Elements > Hydroxides of Third Row Elements In this article, we shall study hydroxides of third row elements. Different types of hydroxides of third-row elements are classified according to their mode of dissociation. According to Arrhenius’s theory, the acid is the substance which gives H+ ions in an aqueous […]

Inorganic Chemistry

Oxides of the Third Row Elements

Post author By Hemant More
Post date June 2, 2020
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Science > Chemistry > Third Row Elements > Oxides of the Third Row Elements A binary compound of an element with oxygen, in which the oxygen atom is electronegative is called an oxide. e.g. MgO, Al2O3, etc. The oxide in which Oxygen exhibits the normal oxidation state of -2 is called normal oxide. In this article, […]

Inorganic Chemistry

Molecular Solids of the Third Row

Post author By Hemant More
Post date June 2, 2020
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Science > Chemistry > Third Row Elements > Molecular Solids of the Third Row in this article, we shall study the crystal structure of molecular solids of third perid of periodic table. Molecular solid: The substance in which lattice points are molecules which are held together by means of weak physical forces (van der Waal’s […]

Inorganic Chemistry

Metallic Solids of the Third Row

Post author By Hemant More
Post date June 1, 2020
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Science > Chemistry > Third Row Elements > Metallic solids of the Third Row In this article, we shall study properties metallic solids of third row. The metallic bond is defined as the force of attraction that binds metal cations to a number of mobile or delocalized electrons within its sphere of influence which holds […]

Inorganic Chemistry

Concept of Metallic Bond and Metallic Solids

Post author By Hemant More
Post date June 1, 2020
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Science > Chemistry > Third Row Elements > Concept of Metallic Bond and Metallic Solids In this article, we shall study the concept of metallic bond and metallic bonds in sodium, magnesium and aluminium crystals. Concept of Metallic Bond: The metallic bond is defined as the force of attraction that binds metal cations to a […]

Inorganic Chemistry

Oxidizing and Reducing Property of the Third Row Elements

Post author By Hemant More
Post date June 1, 2020
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Science > Chemistry > Third Row Elements > Oxidizing and Reducing Property of the Third Row Elements In this article, we shall discuss the trend in oxidizing and reducing property of third row elements. Oxidation: The process in which an atom, a molecule or an ion loses one or more electrons is called oxidation. It […]

Inorganic Chemistry

Metallic Character of Third Row Elements

Post author By Hemant More
Post date June 1, 2020
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Science > Chemistry > Third Row Elements > Metallic Character of Third Row Elements In this article, we shall study the trend im metallic character of third row elements. Metallic Character: The tendency of an atom to lose electrons to form positively charged ion is called its metallic character or electropositive character. Typically metals show […]