The doctrine of Repugnancy essentially deals with the conflict between the laws of Centre and State. India adopts a federal structure of governance, therefore the extent of legislative powers is distributed between the Centre and the States. As per Article 245, Parliament may make laws for whole or any part of India and the legislature […]
The group IV-A (14) in the periodic table is known as ‘Carbon family’ consist of five elements, namely, Carbon (C), Silicon(Si) Germanium (Ge), Tin (Sn) and Lead (Pb). Carbon is the essential constituent of all organic matter, while silicon is an important constituent of inorganic matter. Electronic Configuration of Group IV(14) Elements: Sr.No. Elements Atomic […]
In this article, we shall discuss a very important periodic property called the atomic radius. Atomic Radius: The size of an atom is very small (120 pm). Secondly, since the electron cloud surrounding the atom does not have a sharp boundary, the determination of the atomic size cannot be precise. One practical approach of finding the size of an atom of […]
Science > Chemistry > Organic Chemistry > Halogen Derivatives of Alkanes > Physical Properties of Alkyl Halides In the last few articles, we have studied the methods of preparations of alkyl halides. In this article, we shall study the physical properties of alkyl halides. Some physical properties of alkyl halides are as follows: State: Lower […]
Science > Chemistry > Organic Chemistry > Halogen Derivatives of Alkanes > Preparation of Alkyl Halides by Halide Exchange Method In the last three articles, we have studied the methods of preparations of alkyl halides from alkanes, alkenes, alcohols. In this article, we shall study the method of the preparation of alkyl halids by halide […]
Science > Chemistry > Organic Chemistry > Halogen Derivatives of Alkanes > Preparation of Alkyl halides From Alcohols In the last two articles, we have studied the methods of preparation of alkyl halides from alkanes and alkenes. In this article, we shall study the preparation of alkyl halides from alcohols. The Action of HX on […]
Science > Chemistry > Organic Chemistry > Halogen Derivatives of Alkanes > Preparation of Alkyl halides From Alkenes In the last article, we have studied the preparation of alkyl halides from alkanes. In this article, we shall study the preparation of alkyl halides from alkenes (olefins). The Action of HX on Alkenes: It is an […]
Science > Chemistry > Organic Chemistry > Halogen Derivatives of Alkanes > Preparation of Alkyl Halides From Alkanes In this article, we shall study methods of preparation of alkyl halides from alkanes. Alkyl halides can be prepared from alkanes by their halogenation. General Reaction: R – H + X– X → R – X + […]
Science > Chemistry > Chemical Kinetics > Arrhenius Equation In this article, we shall study the factors affecting the rate of a chemical reaction and the Arrhenius equation. Factors Affecting the Rate Of Reaction: The Concentration of Reactants: The number of collisions and hence the activated collisions between the reactant molecules increase with the increase […]
Science > Chemistry > Chemical Kinetics > Collision Theory The occurrence of a bimolecular chemical reaction can be explained on the basis of collision theory. The Collision of Reacting Molecules: Consider a bimolecular general reaction A + B → C In order for a chemical reaction to take place, the molecules of reactants A and […]