Group 7

rachbreen
Mind Map by rachbreen, updated more than 1 year ago
rachbreen
Created by rachbreen about 7 years ago
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Mind Map on Group 7, created by rachbreen on 05/07/2013.

Resource summary

Group 7
1 Van der Waals increase down group due to increase in electrons
1.1 Boiling points increase.
2 Reactivity decreases down the group
2.1 Atomic radius increases
2.2 Shielding increases
2.3 Nuclear attraction for other electrons is not as strong
3 Need to attract an electron to form octet!!! - ion
4 Halide ions
4.1 Chlorine + silver = white precipitate
4.1.1 Soluble in dilute ammonia
4.2 Bromine + silver = cream precipitate
4.2.1 Soluble in concentrated ammonia
4.3 Iodine + silver = yellow precipitate
4.3.1 Insoluble in concentrated ammonia
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