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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)
30 cze 2023 · The halogens form many interhalogen compounds with the less electronegative halogen surrounded by the more electronegative halogens. Neutral, anionic, and cationic interhalogen compounds are known. ICl and IBr are widely used in organic synthesis and are commercially available.
Group 7 the Halogens - AQA Chemistry A-level. The group 7 elements are highly reactive non-metals that need to gain an electron to form a 1- ion and achieve a full outer shell of electrons. The atomic radius of group 7 elements increases down the group due to additional electron shells. The group 7 elements need to gain an electron.
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 ...
15 kwi 2024 · 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)
Classical halogen Halogen bond Hydrogen bond δ– δ– δ– δ– δ– δ– δ+ δ+ δ+ δ+ δ– δ– A A Aδ– Aδ– Aδ– Aδ– Aδ– Aδ– A (a) (b) (c) Figure 1.1 Schematic of interactions between a halogen atom and a Lewis base acceptor (A) from a classical view of halogens (a) and from a modern halogen bonding description (b).
Periodic trends in the physical properties of the halogens are mirrored by trends in their chemical properties as well. The halogens exist in nature mainly in the form of salts of their anions.
