WebThis establishes the trend in reactivity of the halogens down Group 17, which could be extended by investigating the reaction of bromine water with halide ions in solution. The reactivity is related to the oxidising power of the halogens, which decreases down the group. WebIn the periodic table the halogens make up Group 17 (according to the numbering system adopted by the International Union of Pure and Applied Chemistry), the group immediately preceding the noble gases. The halogen atoms carry seven valence electrons in their outermost electron shell.
3.2 Properties of elements in group 1 and group 17 Flashcards
WebHow does the chemical reactivity change as we move down in group 17 of the periodic table? The tendency to gain electron decreases down the group due to increase in atomic radii and a decrease in the effective nuclear force. Why does the reactivity decrease down group 7? Reactivity decreases down the group. WebAs we descend Group 7, the reactivity decreases. For stability, the atom needs to have a full outer shell. Group 7 elements need to gain 1 electron to have a full shell. As a result, a... how to see the leaderboard with mee6
Reactivity series - Group 7 halogens - BBC Bitesize
WebAug 21, 2024 · It can be seen that there is a regular increase in many of the properties of the halogens proceeding down group 17 from fluorine to iodine. This includes their melting … Web1 m The Halogens in Group 17 are non metal elements that are diatomic and simple covalently bonded. They decrease in reactivity down the group but increase in their melting and boiling points. Refresher: The periodic table is organized into groups - where each column comprises a group. WebThe fall in reactivity is because the halogens become less good oxidising agents as you go down the group. In the cases of chlorine and bromine, the iron atoms are oxidised to iron (III) ions. Electrons are removed by the chlorine or bromine. Fe Fe 3+ + 3e - But with iodine you only get iron (II) ions. Fe Fe 2+ + 2e - how to see the logical name form