Halogenation
In acetic acid, halogen atoms successively replace the three hydrogen atoms of the alkyl group. ..
In acetic acid, halogen atoms successively replace the three hydrogen atoms of the alkyl group. ..Halogenation
On treating phenol with bromine, different reaction products are formed. When the reaction is carried out in a solvent of low polarity such as CHCl 3 or CS 2 and at low temperature, monobromo phenols are formed. The highly activating effect of -OH group on the benzene ring allows the pola..
On treating phenol with bromine, different reaction products are formed. When the reaction is carried out in a solvent of low polarity such as CHCl 3 or CS 2 and at low temperature, monobromo phenols are formed. The highly activating effect of -OH group on the benzene ring allows the pola..Halogens
The elements placed in group 7 (VIIA) of the periodic table are called halogens or salt producers. All these elements form salts called halides, e.g. NaCl, NaI, KCl, KI etc. Halogen is an ancient Greek word meaning 'salt producer'. Halogens have seven electr..
Electron Affinity of the Halogens
From chlorine to iodine, which ionize by accepting one electron there is a decrease in the electron affinity or the energy released. The lower electron affinity of fluorine when compared to chlorine is not fully understood. ..
From chlorine to iodine, which ionize by accepting one electron there is a decrease in the electron affinity or the energy released. The lower electron affinity of fluorine when compared to chlorine is not fully understood. ..(i) Halogenation
Phenyl alkyl ethers undergo usual halogenation in the benzene ring. For e.g., Anisole undergoes bromination with Br 2 in ethanoic acid even in absence of Iron (III) bromide catalyst...
Phenyl alkyl ethers undergo usual halogenation in the benzene ring. For e.g., Anisole undergoes bromination with Br 2 in ethanoic acid even in absence of Iron (III) bromide catalyst...Group 17 Elements (The Halogen Family) - Introduction
Group 17 of the periodic table contains the elements fluorine, chlorine, bromine, iodine and astatine. These elements are collectively known as the HALOGENS. This name is derived from two Greek words Halo and Gens meaning 'salt producing'. Halogens are among the ..
Anomalous properties of first element in each group
Similar physical and chemical properties are shown by elements in a group. However the first member of each group differs from its succeeding members (called congeners). This mainly occurs because of, The small size of the atom and its ion. The high ionization en..
Chemical reactivity of halogens
The halogens are the most reactive elements as a family. Fluorine is the most reactive of all the halogens. The reactivity of the halogens decreases down the group. The high reactivity of halogens is due to the following reason..
Oxidising Power of Halogens
>The decreasing oxidising power of the halogen as we go down the group is shown by their decreasing reduction potential..
>The decreasing oxidising power of the halogen as we go down the group is shown by their decreasing reduction potential..Electron Affinity of the Halogens
.79 which is higher than that of iodine i.e., 3.28. Hence, chlorine accepts the electrons more easily than iodine. Electron affinity increases from left to right across the period because of increase in nuclear charge and decrease in atomic size. This causes the incoming electron to experience a gr..
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