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The group 7 elements are simple covalent molecules held together with van der waals forces. The strength of these intermolecular forces increases as the Ar of the molecule increases. Therefore the strength of the van der waals forces increases down the group
The halogens Disproportionation The pure halogens are often unpleasant to use. Solutions in water are often used as oxidizing agents (\chlorine water" and \bromine water" especially, but no equivalent for uorine). X 2(aq) + H 2O (l) H + (aq) + X (aq) + HOX (aq) HOCl is hypochlorous acid. This process is more favorable in base: X 2(aq) + 2OH (aq ...
The elements in Group 7 of the Periodic Table are called the halogens. They include chlorine, bromine and iodine. The halogens are diatomic - this means they exist as molecules, each with a pair of atoms. Chlorine molecules have the formula Cl2, bromine Br2 and iodine I2. Room temperature is usually taken as being 25°C.
5 cze 2023 · The Group 7 elements are called halogens; The halogens have uses in water purification and as bleaching agents (chlorine), as flame-retardants and fire extinguishers (bromine) and as antiseptic and disinfectant agents (iodine)
6 lis 2019 · The halogen elements are a specific group of nonmetals with distinctive properties. Get facts about the location and characteristics of the halogens.
Halogens show very smooth variations in their physical properties. Fluorine and chlorine are in the gaseous state, bromine in liquid and iodine in the solid state. The melting and boiling point of halogens increases with increase in the atomic number of the element.
The Group 17 elements have a particular name: the halogens meaning born of salt. This is due to the formation of salts when they form compounds with a metal. Table 10.1.1 lists the derivation of the names of the halogens. : Derivation of the names of each of the halogens.
