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OCR 21st Century. 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,...
When a group 7 element takes part in a reaction, its atoms each gain one electron. These atoms form negatively charged ions close ion Electrically charged particle, formed when an atom or...
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 halogen atoms gain an electron during reactions, they form -1 ions called halide ions; Atomic structure of Group 7 elements. The atoms of the elements of Group 7 all have 7 electrons in their outer shell
This group is sometimes called the manganese group or manganese family after its lightest member; however, the group itself has not acquired a trivial name because it belongs to the broader grouping of the transition metals.
- silvery metallic
- 7.21 g·cm −3
- 2334 K (2061 °C)
- 1519 K (1246 °C)
In chemical reactions, atoms of Group 7 elements gain one outer electron making just full electron shells. Going down Group 7, the force attracting an extra electron reduces with the distance of each shell from the nucleus. Halogens are elements, halides are salts.
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What is Group 7 halogen chemistry a-level?
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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.
