WebAll Group 17 (group VIIA or halogen) elements have 7 valence electrons (7 electrons in the valence shell or highest energy level). Atomic radius increases down Group 17 from top to bottom. Electronegativity decreases down group 17 from top to bottom. Chemical reactivity of group 17 elements decreases down group 17 from top to bottom. WebAnswer: For all groups in the periodoic table there is a trend, as you descend the group, the atomic tradius gets bigger. this means that the outer electrons are furtehr from the nucleus and are shielded from the nucleus to some degree by the inner electrons. Net effect- it is easier/ less energy...
Group 7 (17) - the halogens - chemguide
Web1.3.3 Group 7 . Context and exemplification - Assessable learning outcomes . Characteristic physical properties . Candidates should be able to: (a) explain, in terms of van der Waals' forces, the trend in the boiling points of Cl2, Br2 and I2; Redox reactions and trends in reactivity of Group 7 elements and their compounds WebFour major factors affect reactivity of metals: nuclear charge, atomic radius, shielding effect and sublevel arrangement (of electrons). Metal reactivity relates to ability to lose … buritibravo.bobbyeduc.com.br
What are three trends in group 7 elements? - KnowledgeBurrow
WebDiscusses trends in atomic radius, electronegativity, electron affinity and melting and boiling points of the Group 7 elements. It also looks at the bond strengths of halogen-halogen bonds and of hydrogen-halogen bonds. Halogens as oxidising agents . . . WebGroup 7 Reactivity Reactivity When a halogen atom reacts it will usually gain an electron, to form a 1- ion (X + e- → X-) The oxidation number has decreased from 0 to -1, therefore … WebApr 10, 2024 · Receive free Design updates. We’ll send you a myFT Daily Digest email rounding up the latest Design news every morning. How du jour is your decorative aesthetic? From the right white, to the ... buri thailand