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What does the periodic table tell us about the elements? Physical properties of the group 7 elements. Mendeleev made an early periodic table. In the modern periodic table, elements are arranged...
Feb 14, 2024 · Revision notes on 6.2.1 Group 7 (Halogens) for the Edexcel GCSE Chemistry syllabus, written by the Chemistry experts at Save My Exams.
Group 7 - physical properties. Elements in the same group of the periodic table show trends in physical properties, such as boiling point. They have the same number of electrons in their...
When a group 7 element takes part in a reaction, its atoms each gain one electron.
Mar 2, 2022 · Revision notes on 2.3.1 Physical Properties of Group 7 for the AQA A Level Chemistry syllabus, written by the Chemistry experts at Save My Exams.
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
Rules. Here are the rules for determining oxidation states of elements: Writing Half Ionic Equations. Write an equation for the species. Work out oxidation states for the element on both sides of the equation. Balance O with H2O. Balance H with H+. Balance charges with e- Combining Half Equations.
