Zusammenfassung der Ressource
Group 7
- Van der Waals increase down group due to increase in electrons
- Boiling points increase.
- Reactivity decreases down the group
- Atomic radius increases
- Shielding increases
- Nuclear attraction for other electrons is not as strong
- Need to attract an electron to form octet!!! - ion
- Halide ions
- Chlorine + silver = white precipitate
- Soluble in dilute ammonia
- Bromine + silver = cream precipitate
- Soluble in concentrated ammonia
- Iodine + silver = yellow precipitate
- Insoluble in concentrated ammonia