Trends of Periodic Table
The properties of the elements exhibit trends. These trends can be predicted using the periodic table and can be explained and understood by analyzing the electron configurations of the elements. Elements tend to gain or lose valence electrons to achieve stable octet formation. Stable octets are seen in the inert gases, or noble gases, of Group VIII of the periodic
read more Periodic properties
From the discussion of the periodic table in the preceeding heading it is evident that properties which depend upon the electronic configuration of an atom vary in a group or in period of the periodic table with atomic number. Thus, when the elements are arranged in order of their atomic numbers there is a periodicity, not only in their chemical properties, but also in
read more Hydrogen peroxide
Hydrogen peroxide [Oxyenated Water] is the simplest peroxide (a compound with an oxygen-oxygen single bond). It is also a strong oxidizer. Hydrogen peroxide is a clear liquid, slightly more viscous than water. In dilute solution, it appears colorless. Due to its oxidizing properties, hydrogen peroxide is often used as a bleach or cleaning agent. The oxidizing capacity of hydro
read more Water
water
Water contains only hydrogen and oxygen atoms in the ratio 2 : 1 hence its molecular formula is . Pure water is bad conductor of electricity due to very low degree of ionisation. Its density is maximum at 4°C. Density of ice is less than that of water due to hydrogen bonding therefore ice floats on water. It reacts with the elements placed above hydrogen in electrochem
read more Hydrogen
It was discovered by Cavendish and named by Lavoiser.
Symbol—H
Electronic Configuration =
Atomic Mass-1.008
Atomic Number-1
Hydrogen is the first element in the periodic table. The nucleus of the hydrogen atom contains one proton and no neutron. The atom has one planetary electron present in the K—shell. Hydrogen resembles with the alkali metals of I-A group (can lose an electron). I
read more Periodic Table
The periodic table is a tabular display of the chemical elements, organized on a basis of their properties. Elements are presented in increasing atomic number; while rectangular in general outline, gaps are included in the rows or periods to keep elements with similar properties together, such as the halogens and the noble gases, in columns or groups, forming distinct rectang
read more Alkane
Compounds of the methane-ethane series constitute the simplest homologous series represented by the general formula . These are called ‘Saturated hydrocarbons’ because their carbon valencies are fully satisfied (by H atoms) and they cannot take up more hydrogen or any other atoms.
The alternative name ‘Paraffin’ (Latin parum-affinis = little affinity) is based upon th
read more Reaction mechanism
A reaction mechanism is a description of the path, or sequence of steps, by which a reaction occurs.
Organic Reaction: It involves breaking and forming of covalent bonds.
Types of Organic Reactions
Organic Reactions are of following types
Substitution
Addition
Elimination
Rearrangement
Pyrolysis and decomposition
1. Substitution or Displacement R
read more Basic Nature of Aliphatic Amines
Amines are basic in nature due to the presence of one lone pair of electrons on nitrogen atom. Basic nature of amine is increased by electron releasing groups as they will increase electron density on nitrogen atom and basic nature is reduced by electron withdrawing group as they will decrease electron density at nitrogen atom.
Basic nature of amines +I effect
Bas
read more Reaction intermediate
Such species are formed during course of reactions but cannot be isolated as they are destroyed at once during the completion of reaction as reaction intermediates are highly but very unstable and short lived.
Types of reaction intermediates
These are of following types:-
(1) Charged Reaction Intermediates: Charged reaction intermediates are carbocations a
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